msem-instigator

First strike
Sacrifice Fearless General: Soldiers you control gain indestructible until end of turn.

Whenever you cast an instant or sorcery spell, target creature can't block this turn.

Vigilance, deathtouch
Whenever a creature dealt damage by Barbed Bruiser this turn dies, draw a card.

Torrent of Ankuliths deals 5 damage to target creature. Create a 1/1 red Elemental creature token.

Whenever an opponent activates an ability of a nonland permanent, destroy that permanent.
{3}{U}{B}{R}: Exile target creature or planeswalker card in a graveyard. Create a token that's a copy of it.

Flash
Enchant player
When Curse of Ceaseless Pursuit enters, put two +1/+1 counters on target creature you control.
Creatures attacking enchanted player have trample.

Flying
When Depraved Imp enters, if you control a legendary creature, put two +1/+1 counters on Depraved Imp.

Ash Freebooter has first strike as long as it's attacking.
When Ash Freebooter enters, you may discard a card. If you do, draw a card.

Equipped creature has hexproof.
{2}: Exile equipped creature. Return it to the battlefield under its owner's control at the beginning of the next end step.
Equip {1}

({T}: Add {W} or {B}.)
As Ruptured Expanse enters, you may pay {1}. If you don't, Ruptured Expanse enters tapped.

Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.
Reconstruct {3}{U} (You may cast this from your graveyard for its reconstruct cost reduced by the mana value of a permanent you sacrifice as you cast it this way. Then exile this.)

Flash
When Blade of Mautakesh enters, creatures you control gain poisonous 1 until end of turn. (Whenever those creatures deal combat damage to a player, that player gets a poison counter. Multiple instances of poisonous trigger separately.)

When Trench Breaker enters, put target creature on top of its owner's library.

Deathtouch
Whenever an Egg you control dies, you may return an exiled card on an Adventure to its owner's hand.

Flash
If an opponent would draw one or more cards except during their draw step, instead they draw a card and you create that many 1/1 white Bird creature tokens with flying.

Rippling Core enters tapped.
{T}: Add {R} or {W}.
{R}{W}, {T}, Sacrifice Rippling Core: Conjure a card named Data-Point into your hand. (It's a sorcery that costs {2} with “Draw a card.”)

You may reveal a creature card you own from outside the game and put it into your hand.
The next spell you cast this turn may be cast as though it had flash. Exile Impromptu Escapade.

{1}, {T}, Sacrifice Stolen Strain: Target creature gains lifelink until end of tun.
{1}, {T}, Sacrifice Stolen Strain: Target creature gains winnow until end of turn. (Damage dealt to it also causes its controller to lose that much life.)

When King of Bones enters, exile up to ten target creature cards in graveyards. Each opponent loses X life and you gain X life, where X is the number of cards exiled this way.

{T}: Add {C}.
{5}, {T}, Sacrifice The Aetherite Saloon: Each player discards their hand and draws seven cards.

Haste
When Prophetic Flame dies, scry 1. (To scry 1, look at the top card of your library. You may put that card on the bottom of your library.)

Target creature gains hexproof until end of turn.
Monument {2}{U} (You may cast this transformed from your graveyard for its monument cost. Exile it if it would leave the battlefield or not resolve.)

Flash
Enchant creature
Enchanted creature gets +2/+2 and can't be blocked by creatures with power 2 or less.

Target player discards a card. If they can't, you draw a card and they lose 2 life.
Acquiesce (If you cast this spell from your hand, exile it as it resolves. When one or more creatures you control deal combat damage to an opponent, you may cast this card from exile without paying its mana cost.)

Enchant creature
Embody (Enchanted creature is a copy of this card except for its types.)
As long as Legend of the Brave is tapped, you may have creatures you control assign their combat damage as though they weren't blocked.