msem-instigator

Deathtouch

Equipped creature and creatures you control that share a name with it get +1/+0.
Whenever equipped creature attacks, create a tapped and attacking token that's a copy of that creature, except it's not legendary. Exile that token at the beginning of the next end step.
Equip {2}

Adorned — Plated Valiant gets +2/+2 as long as it's equipped and/or enchanted.

Flying, menace, haste
When Bloodfiend Ravager enters, it deals 2 damage to any target. If a permanent dealt damage this way would die this turn, exile it instead.
Evoke {1}{R} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

{1}, {T}, Move a -1/-1 counter from another creature onto Grace of the Trinity: Another target creature gains indestructible until end of turn.

Create four 1/1 white Soldier creature tokens, then put a +1/+1 counter on each of up to four creatures you control. Draw a card for each creature you control with power 4 or greater. You gain 4 life.

Trample
When Ghastly Progenitor enters, each opponent reveals their hand. Choose two nonland cards revealed this way. Their owners discard those cards.

Menace
Art of war — At the beginning of your end step, if Hashiro's Infiltrator dealt damage to an opponent this turn, that player discards a card.

When Wharling Willow dies, you may search your library for up to three basic land cards and put them onto the battlefield tapped. If you do, shuffle.

Enchant land
Enchanted land has “{T}: Exile the top card of your library. If it's a nonland card, you may cast that card this turn.”

At the beginning of each upkeep, choose another permanent with the greatest mana value among permanents. Its controller sacrifices it.

Alpha (You may have this creature enter with a +1/+1 counter on it. If you do, it becomes alpha and can only attack alone.)

Art of war — At the beginning of your end step, if Raiun Bay Scourge dealt damage to an opponent this turn, gain control of target artifact or enchantment until Raiun Bay Scourge leaves the battlefield.

Whenever an attacking creature you or a teammate controls dies, Burned Bounty deals damage equal to that creature's power to each opponent.

Target opponent mills five cards. Then exile a card milled this way. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.
Tether (Then if you cast this from your hand, you may exile it tethered to a creature you control. When it dies, you may cast this from exile without paying its mana cost.)

For each creature, its owner puts it on the top or bottom of their library.

Your life total becomes 4. Each opponent's life total becomes 2.

Harmony — Germinate. (Put a +1/+1 counter on a creature or create a 1/1 green Saproling creature token.)
When Woopip Chef enters, harmonize. (Trigger up to one harmony of one permanent you control.)

Proliferate (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)
Scry 2, then draw a card.

Each player sacrifices a creature. Create a tapped 2/2 black Zombie creature token.

{3}{G}: Scaled Devestator gets +1/+1 and gains trample until end of turn.

Reveal the top four cards of your library. You may put one into your hand and the rest into your graveyard.
Compose (Then if you cast this from your hand, exile it and create a Saga token with “r3—You may cast a copy of this card from exile without paying its mana cost.”)

Flash
As long as Panya and exactly one other creature are attacking, both have flying.

{1}{R}: Performer of Desire gets +1/+1 and gains menace until end of turn. Then if its power is 4 or greater, you may transform it.

Swiftwater Cliffs enters tapped.
When Swiftwater Cliffs enters, you gain 1 life.
{T}: Add {U} or {R}.