msem-instigator

Put a +1/+1 counter on target creature. That creature gains first strike until end of turn.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, you gain life equal to the greatest power among creatures you control.

Harness (You may tap a creature you control as you cast this spell. If you do, reduce this spell's mana cost by that creature's power.)
Draw three cards.

Create a tapped colorless Powercell artifact token with “{T}: Add {C}.” It doesn't untap during its controller's next untap step.

Trample
Phoberos Ragehorn has haste as long as you control another Minotaur.
Whenever Phoberos Ragehorn attacks, each player discards a card.

Flying
Whenever Starborne Hellkite attacks, choose two—
• Starborne Hellkite deals 4 damage to any target.
• Destroy target artifact or land.
• Creatures you control get +2/+0 until end of turn.

Whenever Marshback Knights becomes the target of a spell or ability an opponent controls, counter it unless they pay {3}.
{1}{U}: Marshback Knights gains flying until end of turn.

When Emirik Invigilator enters, exile another target nonland permanent until Emirik Invigilator leaves the battlefield.
Fleeting {1}{W} (You may cast this spell for its fleeting cost. If you do, sacrifice it at the beginning of the next end step.)

Distorted (This creature can be blocked by tapped creatures but not untapped creatures.)

Flying
Whenever Swiftwing Sphinx or another creature with flying deals combat damage to an opponent, put a +1/+1 counter on that creature.

Whenever one or more creatures deal combat damage to you, put a -1/-1 counter on one of them.
Attain {5}{W} ({5}{W}: Transform this. Spend at least three colors of mana to activate this, and only as a sorcery.)

{T}: Add {C}.
{1}: Clutch of the Coil becomes a 1/1 Snake creature with poisonous 2 until end of turn. It's still a land. (Whenever this creature deals combat damage to a player, that player gets two poison counters.)

Regenerate target creature. (The next time that permanent would be destroyed this turn, it isn't. Instead tap it.)

{1}, {T}: End the turn. Activate only during your turn.

Look at the top three cards of your library, then put them into your graveyard or back on top of your library in any order.
Draw two cards.

Reach
When Ambush Predator enters, you may return target Horror creature card from your graveyard to your hand.
When Ambush Predator dies, exile it and create a 3/2 green Horror creature token.

Indestructible
Legendary permanents you control have indestructible.

Put a +1/+1 counter on target creature you control. Then that creature fights target creature you don't control. (Each deals damage equal to its power to the other.)

Each player draws a card, then target player mills X cards, where X is the number of cards players have drawn this turn.

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

Whenever you cast a spell, for each of that spell's colors, create a 1/1 Scout creature token that's all colors.

Equipped creature gets +1/+0 and has “Whenever this creature becomes tapped, you gain 1 life.”
Equip {2}

When Sunset Cliffs Lawman enters, you may 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.)

({T}: Add {W} or {B}.)
Gloomcover Steppe enters tapped unless you control a basic Plains or a basic Swamp.