msem-instigator

Exile target creature, then return it to the battlefield under your control. Then sacrifice it.

Vision (Whenever this or another creature enters the battlefield under your control, reveal the top card of your library. Then you may put that card into your graveyard.)
Whenever Aether Recoverer envisions a creature card, return target noncreature card from your graveyard to your hand.

When Aether Road Caravan enters the battlefield, gain control of target nonland permanent with mana value 3 or less for as long as you control Aether Road Caravan.

Counter target spell unless its controller pays {3}. Its controller mills three cards.

When Aether Sculptor enters the battlefield, create a tapped colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”

Remove all counters from all permanents and exile all tokens.

Prowess
At the beginning of each end step, if you cast a multicolor spell or two spells with different colors this turn, each opponent sacrifices a permanent.

Return up to two target permanents to their owners' hands.

Return target permanent you control and target permanent you don't control to their owners' hands.

Create a token that's a copy of target artifact or enchantment you control.

Return target nonland permanent to its owner's hand. You get a glory counter. (You lose glory counters before life. A player with ten or more glory counters wins the game.)

You control equipped creature.
Equipped creature has hexproof and can't attack or block.
{3}: Attach Aetherite Shackles to target creature. Activate only as a sorcery.

Defender, reach
Aetherlock Effigy can block an additional creature each combat.
When Aetherlock Effigy dies, create two 1/1 black Bird creature tokens with flying.

When Aethermancer's Companion enters the battlefield, aetherize up to two other non-Cat permanents you control. (Create tokens that are copies of each of them, then exile them.)
Recite {5}{W}{U} (You may cast this spell from your graveyard for its recite cost. If you do, exile it when it enters the battlefield or if it would leave the battlefield.)

Equipped creature gets +2/+1.
Equip multicolored creature {1}
Equip {2}

At the beginning of your end step, you lose 3 life unless you sacrifice a creature.

Flash
If you would upgrade a creature you control, you may put a +1/+1 counter on it instead.
{3}{U}: Put a +1/+1 counter on Affluent Cetanthrope and draw a card.

When Affluent Knight enters the battlefield, recruit, then recruit again. (To recruit, create a 0/0 white Soldier Army creature token, then put a +1/+1 counter on each Army you control.)

Return up to one target creature or planeswalker card from your graveyard to your hand. Each opponent loses 3 life and you gain 3 life.

When Aftermath of the Surge enters the battlefield, create two Treasure tokens.
{1}{U}, Sacrifice two artifacts: Draw two cards.
{3}{U}, Sacrifice four artifacts: Create an 8/8 blue Kraken creature token. It can't block this turn.

Take an extra turn after this one. Exile Again.
Fuse (You may cast one or both halves of this card from your hand.)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Scry 2.
II — Draw two cards.
III — Spells you cast this turn cost {2} less to cast.

When Ageless Ascetic enters the battlefield, return up to one target instant or sorcery card from your graveyard to your hand.

Flying
When Ageless Lorekeeper enters the battlefield, you may discard your hand. When you do, draw three cards.

When Ageless Weaver enters the battlefield, create a green Aura enchantment token named Years of Experience attached to target creature. The token has enchant creature and “Enchanted creature gets +2/+2.”
Whenever an enchanted creature you control dies, create a 3/3 green Elemental creature token.