msem-instigator

Creatures you control gain flying until end of turn if you control a creature with flying. The same is true for first strike, double strike, haste, hexproof, indestructible, lifelink, trample, vigilance, and prowess.

Target attacking creature gets +3/+0 until end of turn.

Target player reveals their hand. You choose three cards from it and exile them. Then that player exiles the top three cards of their library.

Flying
If Mindbreaker Sphinx would deal combat damage to a player, you may prevent it. If you do, that player mills X cards, where X is Mindbreaker Sphinx's power. If two cards that share a card type were milled this way, put a +1/+1 counter on Mindbreaker Sphinx.

Deathtouch
Whenever an opponent casts a noncreature spell, draw a card.

Flash (You may cast this spell any time you could cast an instant.)
When Mist Lurker enters, tap all creatures you don't control.

Mistwake Hydra enters with X +1/+1 counters on it.
Creatures with power less than Mistwake Hydra's power can't block it.

Target creature you control gets +1/+0 and gains menace until end of turn. (That creature can only be blocked by two or more creatures.)
Draw a card.

Moonlit Shore enters tapped unless you control two or more blue and/or black permanents.
{T}: Add {U} or {B}.

Return up to two target creature cards from your graveyard to your hand.

Target creature can't be blocked this turn.

Destroy target creature an opponent controls, then that player sacrifices a creature.

Vigilance (Attacking doesn't cause this creature to tap.)

Flying
{3}{U}, Sacrifice Nimbus Fae: Put target creature on top of its owner's library.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When Northwind Master enters, you may have another target creature you control gain prowess until end of turn.

Lifelink (Damage dealt by this creature also causes you to gain that much life.)
When Ophelia's Neophyte enters, you may have another target creature you control gain lifelink until end of turn.

When Oracle Crab enters, scry 2. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Creatures you control get +3/+3 until end of turn and creatures your opponents control block this turn if able.

Equipped creature gets +1/+1 and has vigilance and lifelink.
Equip {3}

Flying
When Palloren Vulture enters, each player mills two cards.

{T}, Sacrifice a creature: Return target creature card from your graveyard to your hand.
{T}, Sacrifice an artifact: Planar Processor deals 1 damage to any target.
{T}, Sacrifice an enchantment: Draw a card.
{T}, Sacrifice a land: Add one mana of any color.

Choose a creature. When it dies this turn, distribute two +1/+1 counters among any number of creatures you control.