msem-instigator

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

Target player discards two cards.
Flashback {4}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flash
When Turned by Fear enters, return up to one target creature to its owner's hand.
At the beginning of combat on your turn, up to one target creature gains menace until end of turn.

Each player discards their hand. Draw up to two hands of seven cards. Shuffle all but one of your hands into your library. Each other player draws seven cards.

Search your library for a permanent card with mana value 3 or less and put it onto the battlefield, then shuffle.
Motley — Then if there are five or more names among nonland permanents you control, you gain 7 life.

Enchant creature
Enchanted creature gets +2/+2.
Kindle 2—{2}{W} ({2}{W}, Exile this card from your graveyard: Create two 1/1 colorless Elemental creature tokens. Kindle only as a sorcery.)

Double strike, vigilance, lifelink

Deathtouch
Heretic (Whenever you cast a spell that doesn't share a color with this creature, it gets +1/+1 until end of turn.)

When Seluriel's Blessing enters, put a +1/+1 counter on each creature you control.
Creatures you control enter with an additional +1/+1 counter on them.
Creatures you control with counters on them have vigilance and indestructible.

Whenever you scry, tap target creature an opponent controls.
{2}{W}{U}: Scry 1. You gain 1 life.

({T}: Add {R}, {G}, or {W}.)
Rugged Dominion enters tapped.

Whenever an attacking creature dies, you may pay {R}. If you do, create a 2/1 red Merfolk creature token.

When Prismatic Basilisk enters, you may search your library for a permanent card with mana value 1 or less, reveal it, put it into your hand, then shuffle.
{2/W}{2/U}{2/B}{2/R}{2/G}: Prismatic Basilisk gets +5/+5 and gains flying until end of turn.

Counter target spell. Create a 1/1 blue Elemental creature token with flying.

Oshiruko Whisperwalker can't be blocked except by Rogues.
Whenever a creature is returned to its owner's hand, you may draw a card. If you do, discard a card.

As long as your deck contains only black and colorless cards, your minimum deck size is reduced by eight.

When Voiceless Assailant enters, you may search your library for up to three cards named Voiceless Assailant, reveal them, put them into your hand, then shuffle.

Enshrouded Village enters tapped.
{T}: Add {G}.
{1}{G}{G}: Until end of turn, Enshrouded Village becomes a 4/4 Human creature with trample. Activate only if you're horrific.

[+1]: Until your next turn, up to one target creature gets -9/-0.
[–2]: Reveal the top four cards of your library. Put any number of cards with mana abilities from among them into your hand, then put the rest on the bottom of your library in any order.
[–6]: You get an emblem with “At the beginning of each opponent's end step, gain control of target creature that player controls.”

Destroy target planeswalker. Mummy's Grin deals 2 damage to that planeswalker's controller.

Whenever Dawnrise Attendants attacks, put a +1/+1 counter on any number of target creatures that entered this turn.

Flying, haste
Whenever you cast an instant or sorcery spell, Sovereign of Old Jidai gets +1/+0 until end of turn.

Splendid Scenery enters tapped unless you control a basic land.
{T}: Add {G} or {W}.

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Enchanted creature can't be blocked.
{1}{U}: Enchanted creature gains hexproof until end of turn.

Trample
Lian Taizi gets +1/+1 for each card in your hand.
When Lian Taizi enters, return any number of target cards with different mana values from your graveyard to your hand.