msem-instigator

Triumvirate Infiltrator has flying as long as you control another Elemental.

When Dwarven Tunnelers enters, create a tapped Treasure token.
{T}: Target creature with power 2 or less can't be blocked this turn.

Flash
When Emissary of Dark Tides enters, you may return target noncreature spell or tapped creature to its owner's hand.

When Nomadic Patriarch enters, nourish 1. (To nourish 1, either put a +1/+1 counter on this creature or create a 1/1 white Citizen creature token.)
Remove a +1/+1 counter from Nomadic Patriarch: Put a +1/+1 counter on each other creature token you control.

Each creature gets -X/-X until end of turn. Destroy each artifact and enchantment with mana value X or less.

Mark (Whenever this creature attacks, mark target creature until end of turn.)
Whenever a marked creature you don't control blocks, Cadalon Chemist deals 1 damage to that creature.

Renown 1 (When this creature deals combat damage to a player, if it isn't renowned, put a +1/+1 counter on it and it becomes renowned.)
{4}{R}{G}: Twinblade Paragon gains double strike until end of turn.

Return target creature to its owner's hand. If it's tapped, you may put it into its owner's library second from the top instead.

Target creature gets +2/+2 until end of turn. If you control four or more lands, that creature gets an additional +2/+2 until end of turn.

Creatures you control get +1/+1 until end of turn.
Showcase {2}{W}{W} (Then if you cast this for its showcase cost, create a 1/1 red Bard creature token that can't block and exile this. Whenever it attacks, you may cast a free copy of this.)

{G}: Exile target card from a graveyard. You gain 1 life and Purging Watchkeeper gets +1/+1 until end of turn.

When Outside the Airlock enters, create a tapped 3/2 green Horror creature token.
Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life.

This spell costs {1} less to cast for each card you've drawn this turn.
Fiery Burst deals 3 damage divided as you choose among any number of targets.

Return up to one target creature to its owner's hand. Then if this spell was foretold, you may destroy all creatures.
Foretell {1}{W}{W}{U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

You may look at an additional card each time you scry.
{2}, Tap two untapped creatures you control: Scry 1.

{T}, Sacrifice Camahueto Calf: Return target land card from your graveyard to the battlefield.

Target player draws two cards and loses 2 life. Up to one target creature seeks valor. (Give it that Oath Aura. Fulfill it by it dealing combat damage to a player to create a 2/1 white Soldier token.)

Enchant player
When Kazimir's Inquisition enters, enchanted player chooses four card names.
Whenever enchanted player casts a spell, if it doesn't have one of the chosen names, enchanted player loses 4 life.

Defender
When Immured Fiend enters, target opponent discards two cards.

Flying, vigilance
If a nonland permanent entering the battlefield would cause a triggered ability of a permanent you control to trigger, you may have that ability trigger an additional time. If you do, each opponent copies that ability and may choose new targets for the copies.

Menace
When Depraved Archknight enters, each opponent may pay 7 life. For each player that doesn't, you draw seven cards.

Whenever you cast a spell from exile, you may draw a card.
At the beginning of your upkeep, you may reveal the top card of your library.

When Alenian Cruel-Star enters, put a +1/+1 counter on it if you control another Goblin.

{T}: Add {C}.
{1}, Discard Imperial Port: Search your library for a basic land card, reveal it, and put it into your hand. Then shuffle.