When The First Battalion enters, create two 2/2 colorless Minion creature tokens with decayed.
Minions you control lose all abilities.

Time loop
I — Pay any amount of life. Create an X/X black Demon creature token, where X is the amount of life paid.
II — You draw a card and you lose 1 life.
III — Target creature you control gains lifelink until end of turn.

Vigilance
When The Magma Council enters, it deals damage equal to the number of cards types among permanents you control to target opponent.
Landfall — Once each turn, when a land you control enters, you may have target nonland permanent become a Mountain land.

When The Quindral Accords enters, make a pledge.
Pledge — {3}{W}{U}{B}{R}{G}: Create a 5/5 Robot artifact creature token named Sentry of the New World that's all colors, then look at the top five cards of your library. Put one of them into your hand and the rest into your graveyard. Activate only as a sorcery unless you're making a pledge.

I — Draw two cards.
II — Return all nonland, nonenchantment permanents to their owners' hands.
III — You may cast a non-Saga spell with mana value 5 or less from your hand without paying its mana cost.

Tap all permanents.
Exile The World Stood Still.

Flying, haste
Instant and sorcery spells cost {2} less to cast.
Whenever an opponent casts their second spell each turn, create a 5/5 red Dragon enchantment creature token with flying.

During your turn, this creature has first strike.
{1}{R}, Discard this card: It deals 3 damage to target creature. If that creature would die this turn, exile it instead.

Sacrifice each creature you control. Each opponent sacrifices that many creatures. Draw a card for each creature that's died this turn.

When Tiril Ambassador enters, you may return target nonland card from your graveyard to your hand. You lose life equal to its mana value.
Basic landcycling {1}{U}

Creatures you control can't be blocked unless defending player pays {1} for each creature blocking it.
Creatures can't attack you unless their controller pays {1} for each creature they control that's attacking you.

Each player chooses up to seven cards from their graveyard, then discards their hand and returns the chosen cards to their hand.
Exile Turf Warfare.

At the beginning of each player's upkeep, that player sacrifices a non-Zombie creature.
Whenever a player sacrifices a creature, Tymaret, Bane of Phenax deals 1 damage to target player or planeswalker.

{T}, Sacrifice another nonland permanent: Add X mana in any combination of the sacrificed permanent's colors, where X is 1 plus that permanent's mana value.

Untap all creatures you control. They get +2/+1 until end of turn.
Cycling {2}

[+2]: Create a colorless artifact token named Potion with “Sacrifice this artifact: Put two +1/+1 counters on target creature. Activate only as a sorcery.”
[–3]: You gain 8 life.
[0]: Remove all loyalty counters from Vasilisa, Helping Hand, then transform her.

When this creature enters, you may sacrifice another creature. If you do, create a number of Treasure tokens equal to that creature's power.

Vicious Backstab deals 5 damage to target creature.
Cycling {1}{R}
When you cycle this card, you may discard a card. If you do, draw a card.

Double strike, menace
Ward—Sacrifice a creature.
Whenever Vijkstra attacks, sacrifice a creature.

Flying
At the beginning of your end step, you may exile a card you own from outside the game. Put that card into your hand unless an opponent pays {2} and 2 life.

Whenever this Subroutine runs, draw two cards. Creatures your opponents control get -2/-0 until your next turn.

Target player discards two cards and loses 2 life. If this spell's flashback cost was paid, instead that player discards a card and loses 1 life.
Flashback {B}

Revered
When this creature dies, create a 1/1 green Spirit creature token.

Flying, haste
Amity — Whenever you attack with Warden of Heart and exactly one other creature, you may put a legendary or Dragon card from your hand onto the battlefield tapped and attacking.

Flying
When Warden of Wishes enters, put three wish counters on it, then you gain 7 life.
Whenever you lose life, you may remove a wish counter from Warden of Wishes. If you do, put a card you own from outside the game into your hand.