msem-instigator

Identity — Human creatures you control have lifelink as long as you control at least two creatures that share a creature type with Voice of Gaalia.

Armed — Winterborn Savage gets +1/+1 and has vigilance as long as it's equipped.

Flying
Whenever you draw a card, put a +1/+1 counter on Acolyte of Life.
Remove two counters from Acolyte of Life: It phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.)

Prowess
When Adept of Signals enters, create a Vial token. (It's an artifact with “{1}, Sacrifice this and another permanent: Draw a card. Activate only during your turn.”)
Tokens you control have “{2}, {T}: Sacrifice this token: Draw a card.”

Flying
At the beginning of your end step, untap another target creature you control.

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.

Whenever you cast a noncreature spell, put a +1/+1 counter on Anointed Truthseeker. Up to one target creature can't block Anointed Truthseeker this turn.

When Astute Sceneweaver enters, proliferate. (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)

Flying
At the beginning of your end step, if you cast no spells this turn, scry 2.

Flying
When Aven Merchant enters, create a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)

When Azutahn Hydromancer enters, you may return target creature with power X or less to its owner's hand, where X is the number of differently named lands you control.

Vision (Whenever this or another creature you control enters, reveal the top card of your library. Then you may put that card into your graveyard.)
Whenever Blind Soulcaller envisions an instant or sorcery card, you may tap target permanent.

Flying, prowess

Flying
Whenever you cast a spell from anywhere other than your hand, Brightwing Sphinx gains vigilance until end of turn.

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Harmony — Tap target creature. That creature doesn't untap during its controller's next untap step.
When Chilling Musician enters, harmonize. (Trigger up to one harmony of one permanent you control.)

When Chronomancer Adept enters, put a time counter on each permanent you control with a time counter on it.
Whenever a permanent with vanishing you control leaves the battlefield, you may draw a card.

Return target creature to its owner's hand.
Coalesce {4}{U}{U} (You may cast this from your graveyard for {4}{U}{U}. If you do, it enters as a Horror creature after it resolves. Exile it if it would leave the battlefield or not resolve.)

Whenever Conjured Stalker attacks, you may draw a card. If you do, discard a card.

Create two 1/2 blue Bird creature tokens with flying.
Coalesce {5}{U}{U} (You may cast this from your graveyard for {5}{U}{U}. If you do, it enters as a Horror creature after it resolves. Exile it if it would leave the battlefield or not resolve.)

Slipstream (This creature can't be blocked as long as only creatures with slipstream are attacking.)
Cycling {U} ({U}, Discard this card: Draw a card.)

Flying
Wanderlust — When Crest Skimmer enters, if you control four or more differently named lands, draw a card.

Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)
At the beginning of your end step, if you cast no spells this turn, exile the top card of your library. If it's a nonland card, you may cast it without paying its mana cost.

Flash
When Cunning Mimic enters, sacrifice it unless you return another artifact or creature you control to its owner's hand.

At the beginning of each opponent's upkeep, exile Daril's Timewalker and up to one other target nonland permanent you control, then return those cards to the battlefield under their owner's control.