Nitro-9 — Whenever Ace, Fearless Rebel attacks, you may sacrifice an artifact. When you do, put a +1/+1 counter on Ace, Fearless Rebel, then it fights up to one target creature defending player controls.

Doctor's companion (You can have two commanders if the other is the Doctor.)

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.)

Trample

When Agatha's Champion enters, if it was bargained, it fights up to one target creature you don't control. (Each deals damage equal to its power to the other.)

Whenever you cast a wordy spell, scry 2. (A spell is wordy if it has four or more lines of rules text.)

, : Choose target creature you don't control. Reveal the top card of your library. Alexander Clamilton gets +X/+0 until end of turn, where X is the number of lines of rules text of the revealed card. Alexander Clamilton fights that creature.

When Apex Altisaur enters, it fights up to one target creature you don't control.

Enrage — Whenever Apex Altisaur is dealt damage, it fights up to one target creature you don't control.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I — Target creature you control fights up to one target creature you don't control.

II — Add . Put two +1/+1 counters on up to one target creature you control.

III — You gain life equal to the greatest power among creatures you control.

Whenever another Bear you control enters, choose one —

• Put two +1/+1 counters on target Bear.

• Target Bear you control fights target creature you don't control.

Target creature you control fights target creature the opponent to your left controls. Then that player may copy this spell and may choose new targets for the copy.

Choose target creature you control and target creature you don't control. If you control three or more snow permanents, the creature you control gets +1/+0 and gains indestructible until end of turn. Then those creatures fight each other. (Each deals damage equal to its power to the other.)

When Bloodrage Alpha enters the battlefield, choose one —

• Another target Wolf or Werewolf you control fights target creature you don't control.

• When you cast your next Wolf or Werewolf spell, it gains "When this creature enters the battlefield, it fights up to one target creature you don't control."

Indestructible

Whenever Brash Taunter is dealt damage, it deals that much damage to target opponent.

, : Brash Taunter fights another target creature.

Choose one —

• Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

• Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)

When Cherished Hatchling dies, you may cast Dinosaur spells this turn as though they had flash, and whenever you cast a Dinosaur spell this turn, it gains "When this creature enters, you may have it fight another target creature."

Target creature fights another target creature. (Each deals damage equal to its power to the other.)

Create a Monster Role token attached to target creature you control. When you do, that creature fights up to one target creature you don't control. (If you control another Role on it, put that one into the graveyard. Enchanted creature gets +1/+1 and has trample. Creatures that fight each deal damage equal to their power to the other.)

Target blocking creature fights another target blocking creature.

Creatures you control get +1/+0.

+1: Add or . Creature spells you cast this turn can't be countered.

−2: Target creature you control fights target creature you don't control.

Coven — Choose target creature you control and target creature you don't control. If you control three or more creatures with different powers, put a +1/+1 counter on the chosen creature you control. Then the chosen creatures fight each other. (They each deal damage equal to their power to the other.)

Target creature you control gets +1/+2 until end of turn. It fights target creature you don't control. (Each deals damage equal to its power to the other.)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I — Scry 2.

II — Put two +1/+1 counters on target creature you control.

III — Until end of turn, target creature you control gains "When this creature dies, draw two cards." Then that creature fights up to one other target creature.

As Favored Enemy enters the battlefield, note the most prevalent creature type in an opponent's library.

When Favored Enemy enters the battlefield, target creature you control fights up to one target creature you don't control.

Whenever a creature an opponent controls of the noted type dies, put a +1/+1 counter on target creature you control.

Enchant creature you control

When this Aura enters, you may put a name sticker on it. When you do, enchanted creature fights up to one target creature you don't control.

Enchanted creature gets +0/+2 for each name sticker on this Aura with eight or more letters.

Flying

When Foe-Razer Regent enters, you may have it fight target creature you don't control.

Whenever a creature you control fights, put two +1/+1 counters on it at the beginning of the next end step.

As Frontier Siege enters, choose Khans or Dragons.

• Khans — At the beginning of each of your main phases, add .

• Dragons — Whenever a creature with flying enters under your control, you may have it fight target creature you don't control.

Gimli, Mournful Avenger has indestructible as long as two or more creatures died under your control this turn.

Whenever another creature you control dies, put a +1/+1 counter on Gimli. When this ability resolves for the third time this turn, Gimli fights up to one target creature you don't control.

Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)

Cycling (, Discard this card: Draw a card.)

Other creatures have "Whenever this creature attacks, you may have it fight Grothama, All-Devouring."

When Grothama leaves the battlefield, each player draws cards equal to the amount of damage dealt to Grothama this turn by sources they controlled.

At the beginning of your upkeep, target opponent reveals the top three cards of their library, may put a creature card from among them onto the battlefield, then puts the rest into their graveyard. You do the same with the top three cards of your library. If two creatures are put onto the battlefield this way, those creatures fight each other.

When Hivespine Wolverine enters, choose one —

• Put a +1/+1 counter on target creature you control.

• Hivespine Wolverine fights target creature token.

• Destroy target artifact or enchantment.

Put a +1/+1 counter on target creature you control. Then that creature fights target creature you don't control. (Each deals damage equal to its power to the other.)

Kicker

Choose one. If this spell was kicked, choose any number instead.

• Put two +1/+1 counters on target creature.

• Target player gains X life, where X is the greatest power among creatures they control.

• Target creature you control fights target creature you don't control.

Choose target creature you control and target creature you don't control. The creature you control gets +2/+1 until end of turn if it's a Knight. Then those creatures fight each other. (Each deals damage equal to its power to the other.)

Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)

When Kogla and Yidaro enters, choose one —

• It gains trample and haste until end of turn.

• It fights target creature you don't control.

, Discard Kogla and Yidaro: Destroy up to one target artifact or enchantment. Shuffle Kogla and Yidaro into your library from your graveyard, then draw a card.

Reach

Undergrowth — When Kraul Harpooner enters, choose up to one target creature you don't control with flying. Kraul Harpooner gets +X/+0 until end of turn, where X is the number of creature cards in your graveyard, then you may have Kraul Harpooner fight that creature.

This spell costs less to cast if you've cast another instant or sorcery spell this turn.

Target creature you control gets +1/+2 until end of turn. Then it fights target creature you don't control. (Each deals damage equal to its power to the other.)

Choose target creature you control and target creature you don't control. If the creature you control entered this turn, put a +1/+1 counter on it. Then those creatures fight each other.

Ravenous (This creature enters with X +1/+1 counters on it. If X is 5 or more, draw a card when it enters.)

Terror from the Deep — When Mawloc enters, it fights up to one target creature an opponent controls. If that creature would die this turn, exile it instead.

Create a token that's a copy of target permanent. If was spent to cast this spell, instead create a token that's a copy of that permanent, except the token has "When this permanent enters, if it's a creature, it fights up to one target creature you don't control."

Whenever one or more creatures you control fight or become blocked, draw a card.

At the beginning of combat on your turn, you may pay . If you do, double target creature's power until end of turn. That creature must be blocked this combat if able. ( can be paid with either or .)

Put a +1/+1 counter on target creature you control, then it fights target creature you don't control. (Each deals damage equal to its power to the other.)

Adamant — If at least three green mana was spent to cast this spell, the creature you control gains indestructible until end of turn.

Target creature you control fights another target creature. (Each deals damage equal to its power to the other.)

Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)

Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)

Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)

Create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Target creature you control gets +2/+2 if it's a host or has augment. Then it fights target creature you don't control.

Target creature you control gets +1/+2 until end of turn. It fights target creature you don't control. (Each deals damage equal to its power to the other.)

Target creature you control gets +2/+2 until end of turn. It fights target creature you don't control. (Each deals damage equal to its power to the other.)

Target creature you control gets +2/+2 until end of turn if its power is 2. Then it fights target creature you don't control. (Each deals damage equal to its power to the other.)

When Scab-Clan Giant enters, it fights target creature an opponent controls chosen at random.

: Skophos Maze-Warden gets +1/-1 until end of turn.

Whenever another creature becomes the target of an ability of a land you control named Labyrinth of Skophos, you may have Skophos Maze-Warden fight that creature. (Each deals damage equal to its power to the other.)