msem-instigator

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

Surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)
Draw a card.

Vanishing 1 (This permanent enters with a time counter on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
When the last time counter is removed from Conspiracy of Ravens, target player reveals their hand. You choose a nonland card from it. That player discards that card.

Advance {2}{W} (Cast this for {2}{W} to advance it as it enters. {2}{W}: Advance this as a sorcery.)
Whenever Construct Engine advances, create a 1/1 colorless Construct artifact creature token.

Escalate {G} (Pay this cost for each mode chosen beyond the first.)
Choose one or more —
• Target creature gets +3/+2 until end of turn.
• Target creature gains trample and hexproof until end of turn.

When Contagious Ghoul dies, target creature an opponent controls gets -1/-1 until end of turn.
Foreshadow {2}{B} (You may cast this spell for its foreshadow cost. If you do, also trigger its “dies” abilities when it enters.)

When Contagious Host dies, each player loses 1 life.
Revive {2}{B} ({2}{B}, Exile this card from your graveyard: Create a token that's a copy of it except it has no mana cost. Revive only as a sorcery.)

{T}: Add {C}.
{T}, Sacrifice a Clue: Draw a card.

Distorted (This creature can be blocked by tapped creatures but not untapped creatures.)

Landfall — Whenever a land you control enters, Convoy's Companion gets +1/+1 until end of turn. If that land was a Desert, put a +1/+1 counter on it instead.

Copse Tyrant can't be blocked by creatures with power 2 or less.
Spells and abilities your opponents control can't cause cards to leave your graveyard.
Whenever Copse Tyrant deals combat damage to a player, return up to two target permanent cards from your graveyard to your hand.

You may play Coralight Castle from your graveyard as long as seven or more cards are in your graveyard.
Coralight Castle enters tapped.
{T}: Add {W} or {U}.
Cycling {1}{W}{U} ({1}{W}{U}, Discard this card: Draw a card.)

When Coralight Mystic enters, create a white Aura enchantment token named Whale's Spirit attached to target creature. The token has enchant creature and “Enchanted creature has lifelink.”

Core Ignition deals X damage to target creature or planeswalker.
Conjure a card named Data-Point into your hand. (It's a sorcery that costs {2} with “Draw a card.”)

Flying
When Cormoran, Raven Monarch enters, you may put target creature card with mana value 3 or less from a graveyard onto the battlefield under your control.

At the beginning of combat on your turn, look at the top four cards of your library. You may put a creature card with mana value 3 or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order.

({T}: Add {B}.)
Corpsebed enters tapped.
When Corpsebed enters, exile up to two target cards from graveyards.

When target creature you control dies this turn, return it or another creature card with an equal or lesser mana value from your graveyard to the battlefield tapped.

Haste
This creature can't block.
{2}{R}: Return this card from your graveyard to your hand.

Glitch {1} (Remove one [restriction] for each time you pay the glitch cost.)
Target opponent reveals their hand. You choose a [noncreature,] nonland card [with mana value 3 or less] from among them. That player discards that card.

(Transform this if it's not attached to a creature. Pay {3}{B} as a sorcery to unattach it.)
Enchant creature you control
Corrupted Mount's rider gets +5/+4 and can't block.

Whenever one or more cards leave your graveyard, each opponent loses 1 life and you gain that much life.

When Cosmic Contraption enters or leaves the battlefield, you may reveal a noncreature card you own from outside the game and put it into your hand.

Converge — Counter target spell unless its controller pays {1} for each color of mana spent to cast Cosmic Sinkhole.

Target opponent chooses a card type, then reveals their hand. You choose a card from it that's not of the chosen type. That player discards that card.