msem-instigator

Destroy target creature that was dealt damage this turn. (Then exile this card. You may cast the creature later from exile.)

Flying
Whenever Reliya's Construct attacks, it gets +1/+1 until end of turn for each instant or sorcery card in your graveyard.
{U}{U}, {T}, Sacrifice Reliya's Construct: Return target instant or sorcery card from your graveyard to your hand.

At the beginning of your upkeep, if Stonework Infantry is on the battlefield, each player returns all cards named Stonework Infantry from their graveyard to the battlefield.

Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)
Scry 1. (To scry 1, look at the top card of your library. You may put that card on the bottom of your library.)

Target creature gets +1/+3 until end of turn. (Then exile this card. You may cast the creature later from exile.)

Flying
Whenever Acabo, the Fabled Falcon attacks, you choose how up to one target creature an opponent controls blocks this turn.

{T}: Add {G}.
Once during each of your turns, you may cast a creature spell from your graveyard if there are thirteen or more cards in your graveyard. (You still pay its costs. Timing rules still apply.)

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}{R}: Mieng gains flying until end of turn.
Whenever Mieng attacks, create a 4/4 red Dragon creature token with flying that's tapped and attacking. Exile that token at end of combat unless you're in a renaissance.

Patent Thief gets +1/+1 and can't be blocked as long as an artifact was put into your graveyard from the battlefield this turn.

Choose target creature you control, then choose two —
• Put a +1/+1 counter on it.
• Put a first strike counter on it.
• Put a trample counter on it.

Whenever Apostle of the Spirit Moon becomes blocked by a creature, Apostle of the Spirit Moon deals 1 damage to that creature and that creature's controller.

Whenever a nontoken creature you control enters, if it wasn't cast, put a +1/+1 counter on Wretched Skulker.
{3}{W}, Sacrifice Wretched Skulker: Exile target nonland permanent with mana value less than Wretched Skulker's power.

Double strike
Experience (Whenever this creature attacks, if it has fewer than three +1/+1 counters on it, put a +1/+1 counter on it.)

Create a 1/1 white Citizen creature token. If you control a different permanent of each of three colors, create three of those tokens instead. Whenever a land you control enters this turn, repeat that process.

{4}{W}: Tap target creature.

Sunlit Ruins enters tapped unless you control a Swamp.
{T}: Add {G} or {W}.

At the beginning of combat on your turn, whenever target creature deals combat damage to a player this turn, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When Bloodied Twinblade dies, scry 1. (To scry 1, look at the top card of your library. You may put that card on the bottom of your library.)

Equipped creature gets +1/+1 and has flying.
Equip {2}

Flying
When Syrina's Brood enters, look at the top six cards of your library, then put them back in any order.

{B}, Discard a card: Post a bounty on target creature. (Put a bounty counter on that creature. It has “When this creature dies, each opponent draws a card” as long as it has a bounty counter on it.)

Destroy all artifacts and enchantments with mana value 1 or less.
Draw a card.

Sleight (You may cast this spell as though it had flash if you pay {1} more to cast it.)
Enchant creature you don't control
Embody (Enchanted creature is a copy of this card except for its types.)

Lost Explorer has first strike as long as it's attacking.
{1}{B}, Exile Lost Explorer from your graveyard: Crystallize. (Put a +1/+1 counter on a creature you control or create a Treasure.)

Bloodfell Caves enters tapped.
When Bloodfell Caves enters, you gain 1 life.
{T}: Add {B} or {R}.