, , Tap an untapped creature you control: Target creature gets +1/+1 until end of turn.

Meet in Reverse — You draw cards from the bottom of your library rather than the top.

Spoilers — Whenever an opponent scries, surveils, or searches their library, put a +1/+1 counter on River Song. Then River Song deals damage to that player equal to its power.

First strike, menace, trample

Partner (You can have two commanders if both have partner.)

Whenever a creature enters the battlefield under your control, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Whenever you cast a spell that targets a creature you control, draw a card.

At the beginning of your upkeep, sacrifice Season of the Witch unless you pay 2 life.

At the beginning of the end step, destroy all untapped creatures that didn't attack this turn, except for creatures that couldn't attack.

When Seasoned Buttoneer enters the battlefield, open an Attraction. (Put the top card of your Attraction deck onto the battlefield.)

Whenever you attack with three or more creatures, Seasoned Consultant gets +2/+0 until end of turn.

Discard a card: Tap Seasoned Hallowblade. It gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

When Seasoned Pyromancer enters the battlefield, discard two cards, then draw two cards. For each nonland card discarded this way, create a 1/1 red Elemental creature token.

, Exile Seasoned Pyromancer from your graveyard: Create two 1/1 red Elemental creature tokens.

Tasty (This creature can be attacked directly. If it is attacked, it can't block creatures that didn't attack it.)

Enchant creature or planeswalker you don't control

When Seatower Imprisonment enters the battlefield, conjure a card named Soldiers of the Watch onto the battlefield.

Enchanted permanent can't attack or block, and its activated abilities can't be activated.

Sekki, Seasons' Guide enters the battlefield with eight +1/+1 counters on it.

If damage would be dealt to Sekki, prevent that damage, remove that many +1/+1 counters from Sekki, and create that many 1/1 colorless Spirit creature tokens.

Sacrifice eight Spirits: Return Sekki from your graveyard to the battlefield.

Enchant creature

Enchanted creature has protection from green and from blue.

Flying

Inspired — Whenever Siren of the Silent Song becomes untapped, each opponent discards a card, then each opponent mills a card.

Mill four cards. Whenever a creature attacks this turn, it gets +1/+0 until end of turn for each creature card put into your graveyard this way.

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

I — Scry 2, then draw two cards.

II — Create a Treasure token and a 2/2 blue Bird creature token with flying.

III — Put a flying counter on each creature you control without flying.

Choose up to two target permanent cards in your graveyard. Roll a d20 and add the total mana value of those cards.

1–14 | Return those cards to your hand.

15+ | Return those cards to your hand. You gain life equal to their total mana value.

Enchant creature or Vehicle

When Song of Stupefaction enters the battlefield, you may mill two cards. (You may put the top two cards of your library into your graveyard.)

Fathomless descent — Enchanted permanent gets -X/-0, where X is the number of permanent cards in your graveyard.

Whenever you cast a spell, populate. (Create a token that's a copy of a creature token you control.)

Enchant creature

Whenever enchanted creature attacks, reveal cards from the top of your library until you reveal an Aura card. You may put that card onto the battlefield. If you don't, put it into your hand. Put the rest on the bottom of your library in a random order.

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.

: Prevent all combat damage that would be dealt this turn by target attacking creature with flying.

As an additional cost to cast this spell, discard a card at random.

Sonic Burst deals 4 damage to any target.

: Add one mana of any color.

, : Untap another target artifact.

, : Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

, : Target creature can't be blocked this turn.

Menace

Each creature you control with menace can't be blocked except by three or more creatures.

Other Snake creatures you control get +1/+0.

Whenever a Warrior you control deals combat damage to a creature, destroy that creature at end of combat.

Enchant creature

Enchanted creature doesn't untap during its controller's untap step.

When enchanted creature becomes the target of a spell, sacrifice Spectral Prison.

When Spirit of the Season enters the battlefield, it gains haste if it's summer. Put a +1/+1 counter on it if it's autumn. You gain 5 life if it's winter. If it's spring, search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Raid — When Storm Fleet Arsonist enters the battlefield, if you attacked this turn, target opponent sacrifices a permanent.

, : Copy target triggered ability you control. You may choose new targets for the copy. (A triggered ability uses the words "when," "whenever," or "at.")

Create a Food token. (Then exile this card. You may cast the creature later from exile.)

The Space Family Goblinson has trample as long as you've rolled three or more dice this turn.

Whenever you roll a die, put a +1/+1 counter on The Space Family Goblinson.

Draw two cards, then you may exile a nonland card from your hand with a number of time counters on it equal to its mana value. Then target opponent does the same. Cards exiled this way that don't have suspend gain suspend.

Time travel. (For each suspended card you own and each permanent you control with a time counter on it, you may add or remove a time counter.)

: Target creature can't attack or block this turn.

At the beginning of your upkeep, you may put a verse counter on Torch Song.

, Sacrifice Torch Song: It deals X damage to any target, where X is the number of verse counters on Torch Song.

Draw two cards. Then discard a card unless you return a land you control to its owner's hand.

Dethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.)

Pay 3 life: Add .

Flying, protection from blue

Until end of turn, up to two target creatures you control each gain "Whenever this creature deals combat damage to a player, draw a card."

Whenever this creature enters the battlefield or transforms into Wildsong Howler, look at the top six cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.)

: Target opponent gains control of Yes Man, Personal Securitron. When they do, you draw two cards and put a quest counter on Yes Man. Activate only during your turn.

Wild Card — When Yes Man leaves the battlefield, its owner creates a tapped 1/1 white Soldier creature token for each quest counter on it.

Yuan-Ti Malison can't be blocked as long as it's attacking alone.

Whenever Yuan-Ti Malison deals combat damage to a player, venture into the dungeon. (Enter the first room or advance to the next room.)