msem-instigator

Whenever Ashen Host becomes the target of a spell, Ashen Host deals 2 damage to any target.

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.)
This creature can't be sacrificed.

Haste
{T}, Sacrifice a creature: Ashspeaker deals 1 damage to any target.

Flying
When Aspect of Divinity dies, create a 0/2 red Egg creature token with “When this creature dies, return target creature card with mana value 2 or less from your graveyard to the battlefield.”

Creatures with power greater than Aspiring Recluse's can't block it.
Whenever Aspiring Recluse deals combat damage to a player, you may pay {2}. If you do, transform it.

Target player sacrifices an attacking creature.
Bulwark — That player sacrifices two attacking creatures instead if you control a creature with toughness 4 or greater.

Exile target nonland permanent. For each of its colors, its controller creates a 1/1 colorless Spirit creature token.

Archive 3 (As this enters, shuffle the top three cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
Whenever you draw a card from the archived library, put the top card of your main library on the bottom of the archived library.
{R}: Exchange a card from the archived library with a card from your hand.

When Astute Prophet enters the battlefield, draw a card. If you control a legendary creature, draw two cards instead.

Whenever a land enters the battlefield under your control, you may pay {2}{G}. If you do, put a +1/+1 counter on Atdrik Ravager.

Whenever Atieh's Destiny or another creature enters the battlefield under your control, you gain 1 life and scry 1.

Flying
When Atieh's Elite enters the battlefield, judge another target creature you control. (Honor it by putting a +1/+1 counter on it or condemn it by sacrificing it to draw a card.)
Whenever you honor a creature, until end of turn, that creature has base power and toughness 4/4, gains flying, and becomes an Angel in addition to its other types.

Choose one or both —
• Prevent all combat damage that would be dealt to creatures this turn.
• Detain target creature. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated.)

When Atrocity of Flesh enters the battlefield, destroy target nonland permanent.
When Atrocity of Flesh dies, you may exile it. If you do, return target card from your graveyard to your hand.

Attentive Glider gets +2/+2 and has flying as long as you cast an Adventure spell or a permanent you controlled explored this turn.

(Add a quest counter as this enters. Sacrifice after 3.)
At the beginning of your end step, if you cast no spells this turn, add a quest counter.
1, 2 — Untap each creature you control. Until your next turn, they gain “{T}: Scry 1.”
3 — Scry 2, then draw two cards. You gain 2 life.
​

When Attuned Ancient enters the battlefield, if you control a legendary creature, you may have Attuned Ancient deal damage equal to its power to target creature an opponent controls.

Haste
Augmented — When Attuned Lifeform enters the battlefield, if you've spent {W}{U}{B}{R}{G} to cast spells this turn, put a +1/+1 counter on each creature you control. They gain vigilance until end of turn.

Prowess
Other Monks you control get +1/+1.
Whenever you cast a spell during another player's turn, untap each Monk you control.

Haste
Augmented — At the beginning of combat on your turn, if you've spent {W}{U}{B}{R}{G} to cast spells this turn, gain control of target nonland permanent until end of turn. Untap it. It gains haste until end of turn.

Tribute 3 (As this creature enters the battlefield, an opponent of your choice may put three +1/+1 counters on it.)
When Atuum Serpent enters the battlefield, if tribute was paid, it gains defender. (This effect lasts indefinitely.)

{1}, Sacrifice a creature or enchantment: Exile the top card of your library. You may play that card this turn.

Flying
Other creatures you control with flying get +1/+1.

Flying
Whenever August Sunbird attacks, create a token that's a copy of another target creature you control, except it's 1/1, and it's tapped and attacking. Sacrifice the token at the beginning of the next end step.

Enchant creature
When Aura of Leadership enters the battlefield, create four 1/1 white Human Soldier creature tokens.
Enchanted creature gets +2/+2.