msem-instigator

Whenever an opponent casts their first spell each turn, that player may pay {1}. If they don't, you may create a Treasure token and you may draw a card.

Copy target spell twice. You may choose new targets for the copies. (A copy of a permanent spell enters the battlefield as a token.)

If you would put one or more counters on a creature you control or on yourself, put that many plus one of each of those kinds of counters on that creature or player instead.
{2}{G}{U}, Sacrifice Triton's Invocation: Draw cards equal to the greatest number of counters among creatures you control and yourself.

Creatures you control gain double strike until end of turn. Whenever a creature you control deals combat damage this turn, put a +1/+1 counter on it.

Exile target creature. Its controller reveals cards from the top of their library until they reveal a creature card. The player puts that card onto the battlefield, then shuffles all other cards revealed this way into their library.

Shuffle any number of cards from your graveyard into your library. You gain that much life.
Draw a card.

At the beginning of your end step, draw a card if a creature died this turn. Then Tumultipede deals 2 damage to each opponent if two or more creatures died this turn. Then create three 1/1 green Saproling creature tokens if three or more creatures died this turn.

Whenever a creature enters the battlefield under your control, if it wasn't cast, you gain life equal to that creature's toughness and may draw a card.
[+2]: Return up to one target creature card from your graveyard to the battlefield.
[–3]: Create an 8/8 blue Kraken creature token.
[–9]: Each player exiles all creature cards from their graveyard, then sacrifices each creature they control. Put each creature card exiled this way onto the battlefield under your control.

Exile target creature. Return that card to the battlefield under its owner's control at the beginning of the next end step.

If you would gain life, you gain twice that much life instead.
If you would draw a card, draw two cards instead.
If you tap a permanent for mana, it produces twice as much of that mana instead.

When Twilight of the Intisuyu enters the battlefield, draw a card, then choose a card name.
Permanents you control with the chosen name have lifelink and ward {1}.

Gestalt (When this or another creature enters under your control, you may merge it with the one in play, keeping counters and attachments. They become the permanent on top plus all abilities from under it.)
Other creatures you control have base power and toughness equal to this creature's base power and toughness.

Renown 1 (When this creature deals combat damage to a player, if it isn't renowned, put a +1/+1 counter on it and it becomes renowned.)
{4}{R}{G}: Twinblade Paragon gains double strike until end of turn.

Flying, haste
Whenever another creature dies, Twinfire Dragon gets +1/+0 until end of turn.

Attacking creatures have winnow. (Damage dealt to a creature with winnow also causes its controller to lose that much life.)

Hexproof
Whenever Twinning Psionic harnesses an instant or sorcery spell, you may copy that spell. If you do, you may choose new targets for the copy.

Each player sacrifices two creatures, then gains 2 life and draws a card for each creature they sacrificed this way.

Flash
When Twisted Speaker enters the battlefield, return target spell to its owner's hand. That spell's controller loses 2 life.

Double strike
Distorted (This creature can be blocked by tapped creatures but not untapped creatures.)
Engage (This creature must be blocked each combat if able.)

Whenever one or more cards are put into an opponent's graveyard from their hand or library, you may exile the top card of each player's library. Until your next turn, you may cast a card from among those exiled cards and you may spend mana as though it were mana of any type to cast that spell.

Creatures you control dying cause abilities of that creature to trigger as though that creature entered the battlefield.
{2}{W}{B}, Sacrifice another creature: Destroy target nonland permanent.

Flying
Ward—Pay 4 life. (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays 4 life.)
Whenever you cast an instant spell, draw a card.
Whenever you cast a sorcery spell, Typhoon Terror deals 2 damage to any target.

Each player chooses up to one permanent they control of each permanent type, then sacrifices the rest. (The permanent types are artifact, creature, enchantment, land, and planeswalker.)

Flying
When Tyrant of Tributes enters the battlefield, target opponent sacrifices X permanents, where X is half the number of permanents they control, rounded up. You gain X life.

When you cast this spell, copy it for each Dragon permanent you control. You may choose new targets for the copies.
Tyrant's Breath deals 7 damage to target creature or planeswalker.