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.)

Whenever you attack a player with one or more equipped creatures, draw a card.

: You may unattach an Equipment from a creature you control. If you do, tap that creature and it gains indestructible until end of turn.

Target creature gets +3/+3 and gains flying until end of turn. (It can't be blocked except by creatures with flying or reach.)

( can be paid with either or 2 life.)

Target artifact or creature you control gains protection from artifacts or from the color of your choice until end of turn.

Target creature gets +2/+2 until end of turn.

Conspire (As you cast this spell, you may tap two untapped creatures you control that share a color with it. When you do, copy it and you may choose a new target for the copy.)

Flash

Enchant creature

As Benevolent Blessing enters, choose a color.

Enchanted creature has protection from the chosen color. This effect doesn't remove Auras and Equipment you control that are already attached to it.

Escalate (Pay this cost for each mode chosen beyond the first.)

Choose one or more —

• Target player gains 4 life.

• Untap up to two target creatures.

• Target opponent sacrifices an attacking creature of their choice.

Target creature you control gets +2/+0 and gains lifelink until end of turn. When that creature dies this turn, create a 1/1 white Spirit creature token with flying.

Exile target creature or enchantment.

Exile target creature an opponent controls. That player reveals cards from the top of their library until a creature card is revealed. The player puts that card onto the battlefield, then shuffles the rest into their library.

Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

You gain 3 life for each creature attacking you.

Flying

Whenever you cast an enchantment spell, put a +1/+1 counter on Blessed Spirits.

You gain 1 life.

Draw a card at the beginning of the next turn's upkeep.

Target creature gets +2/+1 until end of turn. If it's legendary, it also gains lifelink until end of turn.

Flash

Enchant creature

At the beginning of your upkeep, you lose 1 life.

: Regenerate enchanted creature.

Distribute four +1/+1 counters among any number of target creatures.

Miracle (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

When you unlock this door, return up to one target creature to its owner's hand.

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Search your library for up to X basic land cards, where X is the number of lands you control, put them onto the battlefield tapped, then shuffle.

Flying, lifelink

Whenever Breathless Knight or another creature you control enters, if that creature entered from a graveyard or you cast it from a graveyard, put a +1/+1 counter on Breathless Knight.

When Careless Celebrant dies, it deals 2 damage to target creature or planeswalker an opponent controls.

Whenever you activate an ability of an Elemental, Ceaseless Searblades gets +1/+0 until end of turn.

Flash

Enchant creature

As Cho-Manno's Blessing enters, choose a color.

Enchanted creature has protection from the chosen color. This effect doesn't remove Cho-Manno's Blessing.

Creatures you control get +3/+3.

Revolt — When Countless Gears Renegade enters, if a permanent you controlled left the battlefield this turn, create a 1/1 colorless Servo artifact creature token.

Flying

Whenever Dauntless Aven attacks, untap target creature you control.

As Dauntless Bodyguard enters, choose another creature you control.

Sacrifice Dauntless Bodyguard: The chosen creature gains indestructible until end of turn.

Artifacts your opponents control enter tapped.

, Sacrifice Dauntless Dismantler: Destroy each artifact with mana value X.

Sacrifice Dauntless Escort: Creatures you control gain indestructible until end of turn.

Dauntless River Marshal gets +1/+1 as long as you control an Island.

: Tap target creature.

Kicker (You may pay an additional as you cast this spell.)

Creatures you control get +1/+1 until end of turn. If this spell was kicked, those creatures get +2/+1 until end of turn instead.

Daxos's toughness is equal to your devotion to white. (Each in the mana costs of permanents you control counts toward your devotion to white.)

Whenever another creature you control enters or dies, you gain 1 life.

Flying

: Target creature gains indestructible until end of turn.

Haste

When you gain life for the first time each turn, return Deathless Knight from your graveyard to your hand.

You have no maximum hand size.

: Add one mana of any color.

Doubtless One's power and toughness are each equal to the number of Clerics on the battlefield.

Whenever Doubtless One deals damage, you gain that much life.

Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)

Eidolon of Countless Battles and enchanted creature each get +1/+1 for each creature you control and +1/+1 for each Aura you control.

: Exile another target creature you control, then return it to the battlefield under its owner's control.

Whenever another creature you control enters, you may pay . If you do, put a +1/+1 counter on it. If it's a Unicorn, put two +1/+1 counters on it instead. ( can be paid with either or .)

, : Draw a card. Activate only if you control three or more lands with the same name.

The owner of target spell, nonland permanent, or card in a graveyard puts it on their choice of the top or bottom of their library.

When Endless Horizons enters, search your library for any number of Plains cards, exile them, then shuffle.

At the beginning of your upkeep, you may put a card you own exiled with Endless Horizons into your hand.

Endless One enters with X +1/+1 counters on it.

: Add .

, : Exile target creature you control.

, , Sacrifice Endless Sands: Return each creature card exiled with Endless Sands to the battlefield under its owner's control.

Create a 1/1 green Snake creature token for each card in your hand.

Epic (For the rest of the game, you can't cast spells. At the beginning of each of your upkeeps, copy this spell except for its epic ability.)

Trample

At the beginning of your upkeep, sacrifice Endless Wurm unless you sacrifice an enchantment.

Haste

: Regenerate Eron the Relentless.

Changeling

When Faceless Agent enters the battlefield, seek a creature card of the most prevalent creature type in your library. (To seek a card, put one at random from your library into your hand.)

Shadow (This creature can block or be blocked by only creatures with shadow.)

When Faceless Devourer enters, exile another target creature with shadow.

When Faceless Devourer leaves the battlefield, return the exiled card to the battlefield under its owner's control.

If Faceless One is your commander, choose a color before the game begins. Faceless One is the chosen color.

Choose a Background (You can have a Background as a second commander.)

Discard a card, then draw a card.

Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)