msem-instigator

Flash
When Dehmi, Origin Seeker enters the battlefield, counter target spell an opponent controls unless that spell's controller has you create X 1/1 red Elemental creature tokens, where X is that spell's mana value.

Enchant non-Camel creature
When Dehydrate enters the battlefield, draw a card.
Enchanted creature gets -1/-0.

When Delugic Surger enters the battlefield, if you control another Elemental, return target instant or sorcery card from your graveyard to your hand.

Create a Treasure token.
You may sacrifice any number of artifacts. If you do, draw that many cards.
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Menace
When Depraved Archknight enters the battlefield, each opponent may pay 7 life. For each player that doesn't, you draw seven cards.

Once each turn, when you foretell a card or cast a foretold spell, you may create a 1/1 blue Rogue creature token.
{1}{U}{B}: Draw a card, then discard a card.

Assault {1}{B}
Whenever a creature you control assaults, you may have target creature get -2/-2 until end of turn.

Counter target spell unless its controller pays {3}. If you own a foretold card in exile, counter that spell unless its controller pays {6} instead.

Determined Chevalier has vigilance as long as it's embattled.

Whenever a creature you control assaults, put a +1/+1 counter on Devoted Nomad.

Create a tapped colorless Powercell artifact token with “{T}: Add {C}.”
Sacrifice three artifacts.
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Foretell {3}{B}
Each opponent discards three cards.

Whenever Disenfranchised Blacksmith attacks, other Citizens and Peasants you control get +1/+0 until end of turn.

This spell costs {1} less for each Pirate and/or Rogue you control.
Counter target spell unless its controller pays {3}. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Lifelink
Crew 2

When Dominate the Desert enters the battlefield, create a 3/3 green Elephant creature token with trample.
Whenever a creature you control assaults, you may return Dominate the Desert to its owner's hand.

Foretell {2}{U}
If this spell is foretold, you may cast it as though it had flash.
Create a token that's a copy of target creature you control.

Equipped creature has first strike.
Whenever another creature you control dies, put a +1/+1 counter on equipped creature.
Equip {2}

Menace
When Doomed Questant enters the battlefield, each opponent sacrifices a creature and discards a card.

Dragon's Wrath deals 5 damage to target creature or planeswalker and 2 damage to that permanent's controller.

Harmony — Add one mana of any color.
{1}, {T}: Harmonize. Then sacrifice Dragonglass Harp.
When Dragon-Glass Harp is put into a graveyard from the battlefield, draw a card.

Flying
Ride {3}{U}

When Driftpicker enters the battlefield, you may return another non-Crab creature you control to its owner's hand. If you do, create two 1/1 white Bird creature tokens with flying.

Assault {1}{R}
Whenever a creature you control assaults, creatures you control get +1/+0 until end of turn.

Assault {1}{G}
When Dune Tromper assaults, it gains trample until end of turn.