msem-instigator

Sunburst (This enters with a +1/+1 counter on it for each color of mana spent to cast it.)
Sacrifice another artifact: Put a +1/+1 counter on Plasma Enforcer.
When Plasma Enforcer dies, create a 1/1 colorless Servo artifact creature token for each +1/+1 counter on Plasma Enforcer.

You gain hexproof until end of turn. Permanents you control gain indestructible until end of turn.

Deathtouch
When Nel Toth Shaman enters, mill two cards.

Pressure {1}{B} (You may cast this spell for its pressure cost if seven or more cards are in your graveyard.)
Destroy target creature.

When Drop Bear enters, return another target permanent that isn't a land an opponent controls or a card in a graveyard to its owner's hand.

Draw two cards.

Menace
Stalker of Myth gets +1/+0 for each creature you control with chronicle.
{2}, Remove a counter from a permanent you control: Draw a card, then discard a card.

Unbound Spirit can't be blocked.
When you attain Unbound Spirit, tap target creature. That creature doesn't untap during its controller's next untap step.

[+1]: Discard a card. If you do, each opponent discards a card and loses 1 life.
[–3]: Destroy target creature or planeswalker.
[–7]: Draw a card for each creature card and planeswalker card in all graveyards. Target opponent loses that much life.

Vigilance
{2}, {T}: Target player mills two cards.

(Add a quest counter as this enters. Sacrifice after 3.)
Whenever a creature dies, add a quest counter.
1, 2 — Target player loses 1 life and you gain 1 life.
3 — Put target creature card from a graveyard onto the battlefield under your control.
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Enchant creature
Enchanted creature can't be blocked.
Whenever enchanted creature deals combat damage to a player, you may aetherize it. (To aetherize, create a token that's a copy of it, then exile that token.)

Whenever you cast a spell, Daughter of Suisei deals 2 damage to target opponent if that spell has the same name as a card in your graveyard.

Improve {G} ({G}: Put a +1/+1 counter on this creature. This costs {1} more to activate for each +1/+1 counter on it. Improve only as a sorcery.)
When Frontier Trackers dies, create a 1/1 green Elf creature token.

First strike
Whenever Bodyless Knight attacks, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Whenever you or a creature you control become the target of a spell or ability an opponent controls, that opponent gets a spite counter.

Enchant creature
Enchanted creature gets +3/+1.

Improve {1} ({1}: Put a +1/+1 counter on this creature. This costs {1} more to activate for each +1/+1 counter on it. Improve only as a sorcery.)
{T}: Add one mana of any color.
{T}: Add X mana of any one color, where X is the greatest number of counters among creatures you control.

Return up to one target nonland permanent you control and up to one target nonland permanent you don't control to their owners' hands.
Flashback {4}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flying, lifelink, deathtouch

Trample
When Moranai Outriders enters, if it's not a token, create a token that's a copy of it, except it has no mana cost.

Haste
You may cast sorcery and enchantment spells as though they had flash.
Whenever you cast an enchantment, instant, or sorcery spell, Lightning-Fast Lionfish gets +1/+0 and gains first strike until end of turn.

Gestalt (When this or another creature enters under your control, you may merge it with the one in play, keeping counters and attachments. They become the permanent on top plus all abilities from under it.)
Hexproof
At the beginning of your upkeep, put a +1/+1 counter on this creature.

Flash
Flying
When Powder Scatterer enters, exile target noncreature spell. Its controller draws a card.

Choose one —
• Each opponent sacrifices a nonlegendary creature.
• Each opponent sacrifices a legendary creature or planeswalker.