msem-instigator

Target creature you control gets +2/+2 and gains trample until end of turn.
Ferocious — You may cast Fierce Howl as though it had flash if you control a creature with power 4 or greater.

Other untapped creatures have hexproof.
Whenever a creature attacks you, put a +1/+1 counter on a creature you control.

When Temporal Rift enters, exile target creature an opponent controls until Temporal Rift leaves the battlefield.
Whenever you aetherize, you may return Temporal Rift to its owner's hand.

Target creature you control gains haste until end of turn. Return it to its owner's hand at the beginning of the next end step.

Menace
Whenever Ruin Delver attacks, you may sacrifice a land or exile a land card from your graveyard. If you do, you draw a card and you lose 1 life.

If a source would deal damage to you or a permanent you control this turn, prevent all but 1 of that damage.
Metamorph {1}{W} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up and cast it at any time for its metamorph cost.)

Target creature you control gains indestructible until end of turn. If that creature is a Scout, you gain 1 life for each land you control.

Destroy each creature with power 3 or greater.

Return up to one target creature card and up to one target land card from your graveyard to your hand.

Art of war — At the beginning of your end step, if Teikoku Daimyo dealt damage to an opponent this turn, put a +1/+1 counter on each creature you control that attacked this turn.

First strike
Sacrifice Echo Striker: Target creature gains double strike until end of turn.

Tap all lands target player controls and that player loses all unspent mana.

Haste
Whenever you cast an instant or sorcery spell, Pupil of Lightning gets +1/+1 until end of turn. If you cast that spell from your graveyard, put a +1/+1 counter on it instead.

If a spell or ability an opponent controls causes you to discard Edgar, put it onto the battlefield instead of putting it into your graveyard.
Unveil {4}{G}{W} ({4}{G}{W}: Transform this. Unveil only as a sorcery.)

Return target creature or land card from your graveyard to your hand. You may shuffle up to three cards from your graveyard into your library.

Haste
Whenever a nonbasic land becomes untapped, its controller loses 1 life.

Lifelink
Whenever Infectious Ego enters or attacks, exile the top card of target opponent's library. If it's a land card, that player gets a poison counter. You may play that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.

Whenever you cast an Elf spell, create a 1/1 green Elf Druid creature token.
Tap four untapped Druids you control: Destroy target artifact or enchantment.

Flying
Whenever Skyflock Warrior or another creature you control with flying attacks, create a 1/1 white Bird creature token with flying.

Engorge (As this enters, mill three cards, then exile a card from among the milled cards.)
At the beginning of your upkeep, if Subturgian Proliferator engorged a creature card, you may pay {3}{B}. If you do, create a black Zombie creature token with power equal to the engorged card's power and toughness equal to that card's toughness.

Return target blocking creature to its owner's hand. Creatures blocked by that creature get +1/+1 and gain trample until end of turn.

Flying
Whenever a creature in Forsaken Soulherd's pack dies, look at the top card of your library. If it's a creature card with equal or lesser power, you may reveal it and put it into your hand. If you didn't put that card into your hand, you may mill it. (Two or more creatures you control with equal power are in a pack.)

Enchant land you control
Whenever enchanted land is tapped for mana, it produces an additional mana of that type.
{1}{G}, Sacrifice Under Untamed Skies: Destroy target creature with flying.

({T}: Add {W} or {U}.)
Tranquil Stream enters tapped.

Explosion Fanatic can't attack unless an opponent was dealt damage this turn.