msem-instigator

Flying
When Goldnight Seraph enters, it deals X damage to up to one target creature or planeswalker and you gain X life, where X is the number of artifacts you control.

First strike
Spells you cast during combat cost {1} less to cast.

Escalate—Return another spell you control to its owner's hand. (Pay this cost for each mode chosen beyond the first.)
Choose one or both —
• Draw a card.
• Draw a card.

Look at the top four cards of your library. You may reveal a land card from among them and put it into your hand. Put the rest on the bottom of your library in any order.
Dominance — You may reveal a creature card from among them instead if you control the creature with the greatest power or tied for the greatest power.

Flying, vigilance
When you unveil Graced Theurge, draw a card.

Deathtouch
{U/B}: Change a target of target spell or ability that targets Serafina to another creature you control.
Whenever Serafina deals damage to a player, at the beginning of the next end step, that player loses life equal to the life they lost this turn.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Flying, vigilance, lifelink
Whenever Atieh's Favored attacks, put a +1/+1 counter on each other Angel and/or Nephilim creature you control.

Enchant creature
When Hypnotic Halo enters, create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)
{2}{W}{W}, Sacrifice Hypnotic Halo: Exile enchanted creature.

Flying
This spell can't be countered.
When Frostbreath Dragon enters, tap target creature. It doesn't untap during its controller's next untap step.
Whenever Frostbreath Dragon becomes the target of a spell or ability, counter it unless its controller pays {2} and discards a card.

Whenever a land you control enters, target creature gains your choice of flying or lifelink until end of turn.

Enchant opponent
Whenever Substack Exploit or another Curse becomes attached to enchanted player, that player loses 1 life and you gain 1 life.

You may choose not to untap Master of Minds during your untap step.
{T}: Gain control of target creature with mana value X or less for as long as Master of Minds remains tapped, where X is the number of Islands you control.

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)
Whenever Crowd Favorite extorts a spell, put a +1/+1 counter on Crowd Favorite.

Put a +1/+1 counter on target creature. That creature gains first strike until end of turn.

Choose target spell. Scry 3, then reveal the top card of your library. Counter the chosen spell unless its controller pays {X}, where X is that card's mana value. (To scry 3, look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Counter target spell. For each other card named Overcharge in your graveyard, create a colorless Canister artifact token with “{T}, Sacrifice this artifact: Add {C}.”

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Trample
Rift Prowler enters with X +1/+1 counters on it, where X is your fealty to Forests. (Each Forest you control counts towards your fealty to Forests.)

Menace
Pay 2 life: Investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)
Sacrifice a permanent: Darna gets +1/+1 until end of turn.

Destroy target creature. Creatures without flying can't block this turn.

{T}: Add {C}.
{T}, Pay 1 life: Add {W} or {B}.

When Moss Dweller enters, put a +1/+1 counter on another target creature.

When Withering Beggar dies, you may put a -1/-1 counter on target creature.

Flying
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)