msem-instigator

Deathtouch
Whenever Withered Elk deals combat damage to a player, that player loses half their life, rounded down.

Until end of turn, creatures you control have base power X/Y, where X is the greatest base power among creatures you control and Y is the greatest base toughness among creatures you control.
If you control a creature with flying, creatures you control gain flying until end of turn. The same is true for first strike, haste, lifelink, menace, prowess, trample, and vigilance.

Flying
Play with the top card of your library revealed.
Spells cost {X} more to cast, where X is the mana value of the top card of your library.

Flash
You may activate Zero's loyalty abilities any time you could cast an instant on your turn and the turn they entered.
[+2]: Destroy up to one target permanent with mana value 4 or greater.
[–2]: You may cast a spell with mana value 5 or less from your hand without paying its mana cost.
[–3]: Look at the top six cards of your library. Put one of them into your hand and the rest on the bottom of your library in a random order.

Look at target player's hand. That player discards a card.
{2}{B}{B}, Exile Psychic Assault from your graveyard: Choose a card name. Target player reveals their hand and discards all cards with that name. Activate only as a sorcery.

Draw three cards, then discard a card.

Whenever you sacrifice a permanent, you may put a -1/-1 counter on target creature.

Enchant creature
Enchanted creature has defender.

Whenever you cast a blue spell, you may cast creature spells this turn as though they had flash.
Whenever you cast a black spell, put up to one target card from your graveyard on top of your library.

Exile target creature, then return it to the battlefield under your control. Then sacrifice it.

When Powercell Engineer enters, create a tapped colorless Powercell artifact token with “{T}: Add {C}.”

Tap target creature. It doesn't untap during its controllers next untap step.
Judge target creature you control. (Honor it by putting a +1/+1 counter on it or condemn it by sacrificing it to draw a card.)

Destroy target artifact or land.

Vanishing 3
Whenever a time counter is removed from Prayers of Judgement, each player loses 1 life and mills two cards.

Creatures you control get +2/+0 until end of turn. Scouts you control gain trample until end of turn.

Return target creature card from your graveyard to your hand.

Attacking creatures get +2/+0 until end of turn.
Armed — Equipped creatures you control get an additional +1/+0 until end of turn.

{1}{W}, Exile Outcast of the Folded Fan from your graveyard: Create a 1/1 white Bird creature token with flying. Activate only as a sorcery.

Harmony — Create a 1/1 white Bird creature token with flying.
{4}: Harmonize. (Trigger up to one harmony of one permanent you control.)

Living Vista enters tapped.
{T}: Add {G} or {W}.
{1}, {T}: Add one mana of any color.

Target creature gets +3/+0 and gains lifelink and indestructible until end of turn.

Whenever a creature you control deals combat damage to a player, if it has no +1/+1 counters on it, put a +1/+1 counter on it. You gain 1 life.

Reach
When Cordial Ticketmaster enters, put a +1/+1 counter on target creature.

Flying
When Depraved Imp enters, if you control a legendary creature, put two +1/+1 counters on Depraved Imp.

When Drown in Apathy enters, exile target creature until Drown in Apathy leaves the battlefield. If a permanent would be returned to the battlefield this way, put it in its owner's hand instead.