msem-instigator

{G}, Exile a creature card from your graveyard: Put two +1/+1 counters on target creature.

When Ill-Fated Seer enters, each player sacrifices a creature. If they can't, Ill-Fated Seer deals 3 damage to them.
Revive {2}{B}{R} ({2}{B}{R}, Exile this card from your graveyard: Create a token that's a copy of this card, except it has no mana cost. Activate only as a sorcery.)

If one or more counters would be put on a creature you control, that many plus one of each of those kinds of counters are put on that permanent instead.

Flamebearer's Domain enters tapped.
{T}: Add {R}.

Enchant creature
When Make Way enters, draw a card.
Enchanted creature can't block.

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.)
Target creature gets -X/-X until end of turn.

Deathtouch
When Deadwood Terror enters from a graveyard, create two tokens that are copies of it.
{4}{B}{B}, Sacrifice a creature: Return Deadwood Terror from your graveyard to the battlefield. Activate only as a sorcery.

Trample
Revive {5}{B} ({5}{B}, Exile this card from your graveyard: Create a token that's a copy of it except it has no mana cost. Revive only as a sorcery.)

Destroy target creature.

Head on Collision deals 2 damage to any target.
Leitmotif (If you cast this spell from your hand, exile it as it resolves. When you next cast a spell that shares a color with this card, you may cast this from exile without paying its mana cost.)

When Spirit of the Sands enters, if you cast it, target opponent gains control of it.
At the beginning of your end step, draw three cards, then discard two cards.

Vanishing 5
The High Prairies enters tapped.
{T}: Add one mana of any color.

When Defiant Bristles dies, put a +1/+1 counter on target creature.

Trample
At the beginning of combat on your turn, create a 1/1 red Lizard Warrior creature token with haste and winnow. (Damage dealt to that token also causes you to lose that much life.)
Whenever Fang of Anaz attacks, it gets +1/+0 for each other attacking Lizard you control until end of turn.

For each color of mana spent to cast this spell, create a 0/2 green Egg creature token. (Then exile this card. You may cast the creature later from exile.)

When Gilded Merrow enters, if an opponent controls more lands than you, create a Treasure token. (It's an artifact with “{T}, Sacrifice this permanent: Add one mana of any color.”)

This spell costs {1} less to cast for each embattled creature you control. (A creature is embattled if it has a counter on it or a permanent you control attached to it.)
Haste
Whenever Knights of the Burning Pyre attacks, it deals X damage to each opponent, where X is the number of embattled creatures you control.

At the beginning of your upkeep, if you control ten or more storied permanents, you win the game. (Enchantments and legendary permanents are storied.)

Vigilance
Disgraced 1 (This enters with a -1/-1 counter. Whenever it deals combat damage to a player, remove all -1/-1 counters from it.)

Menace (This creature can't be blocked except by two or more creatures.)
{1}{R}: Wandering Goliath gets +1/+0 until end of turn.

When Vitality Maestro enters, you gain 5 life.
Recite {G}{W} (You may cast this creature from your graveyard for its recite cost. If you do, exile it when it enters or if it would leave the battlefield.)

Enchant creature
Enchanted creature gets +2/+2.
When enchanted creature dies, return it to the battlefield under its owner's control.

Enchant creature
Enchanted creature has infiltrate. (Whenever one or more attacking creatures you control aren't blocked, enchanted creature gets +1/+1 until end of turn.)
Whenever enchanted creature deals combat damage to a player, draw a card.

During each of your turns, you may cast a copy of a card in an opponent's graveyard by exiling that card in addition to its other costs. (Copies of permanents enter as tokens.)

Menace
Whenever Auros, Flame-Cursed attacks, it deals 3 damage to each opponent.