msem-instigator

Equipped creature gets +3/+2 and must be blocked by a creature that doesn't share a color with it if able.
Equip {4}

Put a +1/+1 counter on target creature. It gains indestructible until end of turn.

Trample
Whenever Belligerent's Augur or another Warrior you control deals combat damage to a player, you may pay {1}{U}. If you do, draw a card.

Add {W}{U}{B}{R}{G}. Spend this mana only to cast spells from your graveyard or activate abilities of cards in your graveyard.

{T}: Add {C}.
{T}, Sacrifice Gilded Gulch: Add one mana of any color.
When you discard Gilded Gulch, you may pay {1}. If you do, create a tapped colorless land token named Fading Rift with “{T}, Sacrifice this land: Add one mana of any color.”

When Mineral Expert enters, surveil 1. When you do, you may return target instant or sorcery card from your graveyard to your hand. (Look at the top card of your library. You may put that card into your graveyard.)

Vigilance, trample
Prized Marshcroaker can block an additional creature each combat.

Defender
{1}{W}, {T}: Tap target creature.

Cast this spell only if each graveyard has a creature card in it.
Each player puts a creature card in their graveyard of an opponent's choice onto the battlefield.

Flying
When Trove Keeper dies, create two Treasure tokens.

Whenever a creature enters this turn, destroy it.

[+2]: You may sacrifice a permanent or discard a card. If you do, draw a card.
[–X]: Return target creature card with mana value X or less from your graveyard to the battlefield.
[–8]: You get an emblem with “Whenever a permanent you control dies, return a permanent card with lesser mana value from your graveyard to the battlefield.”

Equipped creature gets +2/+1 and has trample.
Whenever equipped creature attacks, other Citizens and Peasants you control get +2/+1 and gain trample until end of turn.
Equip {3}

Desecrate (When this creature enters, you may sacrifice an artifact or land.)
When Exemplar of Disdain desecrates a permanent, target creature you don't control gets -3/-3 until end of turn.

Target player discards a card. If they didn't discard an artifact card, you gain 3 life.

Enchant creature
Enchanted creature doesn't untap during its controller's untap step.

Cast this spell only before combat.
At end of combat this turn, return all creatures that attacked or blocked this combat to their owners' hands. If no creatures attacked or blocked this combat, draw two cards.

At the beginning of your upkeep, you may pay 3 life. If you do, create a 2/1 red Lizard creature token with frenzy 2. (Whenever it attacks and isn't blocked, it gets +2/+0 until end of turn.)

Whenever Insatiable Student attacks, you may sacrifice an artifact. When you do, tap target creature an opponent controls.

Put a +1/+1 counter on up to one target creature.
Draw a card.

Flying
Revive {1}{B}{B} ({1}{B}{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.)

When Hinasa Lorekeeper enters, create a 2/2 colorless Spirit creature token.
Colorless creatures you control have vigilance.

Swallowed by the Earth deals 4 damage to target creature. Destroy all Equipment attached to that creature.

Bloodcrazed Acolyte enters with a +1/+1 counter on it for each player who lost life this turn.

Noncreature spells your opponents cast cost {1} more to cast.
Unveil {2}{W}{U} ({2}{W}{U}: Transform this. Unveil only as a sorcery.)