msem-instigator

Enchant creature
Enchanted creature gets +3/+0 and has haste and menace.

When Emerging Ankulim enters, return each non-Elemental creature to its owner's hand, then Emerging Ankulim deals damage to each player equal to the number of cards in that player's hand.

Create a tapped colorless Powercell artifact token with “{T}: Add {C}.” It doesn't untap during its controller's next untap step.

Whenever you draw your second card each turn, create a 1/1 blue Tentacle creature token.
{3}{G}, Sacrifice two creatures: You gain 1 life and draw a card. Activate only during your turn.

When Glowspore Grove enters or leaves the battlefield, create a 1/1 blue Elemental creature token with flying.

As long as there are four or more card types among cards in your graveyard, Slipstream Silencer can't be blocked.
Whenever Slipstream Silencer attacks, surveil 1.

Defender
When Demonrune Wall enters, exile target creature or enchantment an opponent controls until Demonrune Wall leaves the battlefield.

Destroy target artifact or tapped land.

Indestructible
As long as your devotion to black and green is less than seven, Pharika isn't a creature.
Creatures your opponents control get -1/-1.
{2}{B}{G}: Return target creature card from your graveyard to your hand. You gain 2 life.

Haste
When Scaled Thundercaller enters, target creature gains winnow until end of turn. (Damage dealt to it also causes its controller to lose that much life.)

Lifelink
Spells your opponents cast cost an additional {1} to cast for each spell they've cast before it this turn.

Exile X target creature cards from graveyards. You gain life equal to the total mana value of those cards.

Harmony — Add one mana of any color.
{1}, {T}: Harmonize. Then sacrifice Dragonglass Harp. (To harmonize, trigger up to one harmony of a permanent you control.)
When Dragonglass Harp is put into a graveyard from the battlefield, draw a card.

Whenever a creature you control enters for the second time each turn, it gains haste until end of turn. You may have it get +1/+1 until end of turn.

Whenever Scarhide, Arsenal Crafter attacks, create a token that's a copy of an Equipment attached to Scarhide and attach the token to Scarhide. When you can't, arm it. (Create a colorless Equipment artifact token with “Equipped creature gets +1/+0” and equip {2}, then attach it to that creature.)

Exile target artifact, enchantment, or tapped creature.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever you cast a noncreature spell, draw a card.
At the beginning of your end step, if you have four or more cards in hand, transform Rahstahde.

{W}, {T}: Tap target creature.

As an additional cost to cast this spell, sacrifice a creature.
Return a creature card from your graveyard to the battlefield, then return another creature card from your graveyard to your hand.

When Journey through Kareki enters, draw a card, then choose a creature card name.
Creatures you control with the chosen name get +1/+1.

Trial 4 (As you cast this spell, an opponent of your choice may pay 4 life. If they don't, they fail the trial.)
Search your library for an Angel card, reveal it, put it into your hand, then shuffle. If the trial was failed, non-Angel, non-God creatures can't attack or block until your next turn.

Flying
Whenever another creature you control enters, Adavene, Dean of the Arts deals 1 damage to each opponent.
Whenever a creature you control deals combat damage to a player, you may exile it, then return it to the battlefield.

Flying, vigilance

Until end of turn, target creature gets +3/+0 and gains “When this creature dies, return it to the battlefield tapped under its owner's control.”
Foretell {B} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

{1}{W}: Untap Steadfast Infantry.