msem-instigator

When Meteor Harbinger enters, choose one —
• Meteor Harbinger deals 2 damage to each creature.
• Each player sacrifices two lands.
• Meteor Harbinger deals 2 damage to each of two target players or planeswalkers.

Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

When Shala Na enters, each player chooses a creature they control, then sacrifices the rest.
[+1]: Up to one target creature you control gains double strike and haste until end of turn.
[–6]: You get an emblem with “Whenever a creature dies, each opponent loses 2 life.”

Exile target creature. (Then exile this card. You may cast the creature later from exile.)

{2}, {T}, Exile a card from your graveyard: Draw a card.

Whenever you cast another creature spell, create a 1/1 green and white Elk Spirit creature token.
As long as you control five or more Elk, creatures you control get +3/+3 and have trample.

Create two 3/1 red and white Goblin Soldier creature tokens with haste. Creatures you control gain indestructible until end of turn.

Exile the top two cards of your library. Until the end of your next turn, you may play one of those cards, or both if this spell was foretold.
Foretell {R} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Invocation — Whenever you spend four or more mana to cast a spell or activate an ability during your turn, Brine Cultist can't be blocked this turn.
{5}{U}: Draw a card.

At the beginning of your end step, create a Gold token for each creature you controlled that became tapped this turn. (It's an artifact with “Sacrifice this artifact: Add one mana of any color.”)

Flash
Flying
When Turela, Defiant Angel enters, exile all other creatures you control. Return them to the battlefield under their owner's control at the beginning of the next end step.

Equipped creature gets +1/+1.
Equipped creature can't be blocked by more than one creature.
Equip {1}

Whenever you cast a noncreature spell, Slyten Technician gets +1/+0 until end of turn, then scry 1.

You may choose not to untap Glacial Shelf during your untap step.
{T}: Add {C}.
{4}, {T}: Tap target creature that's attacking you. It doesn't untap during its controller's untap step for as long as Glacial Shelf remains tapped.

At the beginning of combat on your turn, create a 1/1 red Cleric creature token with haste.
At the beginning of your end step, sacrifice each Cleric token you control unless you've cast an instant or sorcery spell this turn.

When Severed Hands enters, surveil 2.
Whenever one or more cards leave your graveyard, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Exile all creatures with power 4 or greater.

Whenever you make first contact, put a patch counter on Distraction Doll. (You make first contact the first time each turn you cast a spell with a name not in your graveyard or control already.)
{T}: Exile Distraction Doll and target creature with mana value less than or equal to the number of patch counters on it.

Vigilance
Whenever Kodaichi Bladedancer attacks, target creature gets +2/+2 until end of turn.

Wildcast — When Ivier, Soul of the Woods enters, return target monocolored creature card from your graveyard to your hand. If mana from a nonland source was spent to cast Ivier, return that card to the battlefield instead.

Return target creature card from your graveyard to the battlefield.
Fabled {2}{B} (Then if you cast this for its fabled cost, put it onto the battlefield transformed attached to that creature.)

Golden age (If you cast an instant or sorcery spell, activated a nonmana ability, and attacked this turn, enter a renaissance for this game.)
[+1]: Scry 1. If you're in a renaissance, draw a card.
[–2]: Return target nonland permanent to its owner's hand if its mana value is 3 or less or if you're in a renaissance.
[–6]: Create two 8/8 blue Kraken creature tokens. If you're in a renaissance, take an extra turn after this one.

Vigilance, reach
Watchful Authority can block an additional creature each combat.

{T}: Add {C}.
{T}, Pay 1 life: Add one mana of any color.

Flying
Whenever you cast a spell, Gilded Hawk gets +1/+1 until end of turn for each of that spell's colors.