msem-instigator

First strike
Noncreature spells with mana value 3 or greater cost {1} more to cast.
Creatures with mana value 3 or greater enter tapped.

First strike
Creatures with power greater than Gao'Wu, Master Soothsayer's power can't attack.

Flash

You may cast Gateblessed Explorer from your graveyard as long as you control three or more creatures.
Whenever another creature dies, each opponent loses 1 life and you gain 1 life.

Populate, then you gain 2 life. (Create a token that's a copy of a creature token you control.)

Choose a creature type. Reveal cards from the top of your library until you reveal a card of the chosen type. Put that card into your hand and the rest on the bottom of your library in a random order.

Prevent all combat damage target creature would deal this turn. You gain life equal to that creature's power.

Flying
{1}, Sacrifice Gearcraft Observer: Look at target player's hand. Draw a card.

{1}{U}{R}, {T}: Create a token that's a copy of another target creature, except it's an artifact in addition to its other types and has “Whenever this creature is dealt damage, destroy it.”

When you cast a creature spell, sacrifice Gemini Cast. If you do, create a token that's a copy of that spell, except the token isn't legendary.

When Gemplate Golem enters or dies, put a +1/+1 counter on target creature you control.

Once during each of your turns, when you sacrifice a permanent, you may have target opponent lose 3 life unless they sacrifice a nonland permanent or discard a card.

Choose one or both —
• Put a +1/+1 counter on each creature you control.
• Attacking creatures you control gain lifelink and indestructible until end of turn.

When Generous Hermit dies, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

Choose two—
• Target creature gains indestructible until end of turn.
• You gain 3 life.
• Draw a card.

Up to two target creatures each get +X/+X until end of turn. They must be blocked this turn if able.

When Genome Mapper enters, create a Function token with “Create an X/X green Mutant creature token, where X is this spell's mana value.” (It's an enchantment. As you cast an instant or sorcery spell, sacrifice any number of Functions to add their effects to that spell.)

Choose one —
• Creatures your opponents control get -1/-1 until end of turn.
• Harmonize twice. (To harmonize, trigger up to one harmony of a permanent you control.)

Discard up to two cards, then draw that many cards.
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.)

Target permanent phases out. (Then exile this card. You may cast the artifact later from exile.)

Deathtouch
When Ghastly Scorpion dies, you draw a card and you lose 1 life.

{T}: Draw a card, then discard a card.
Sacrifice Ghislain, Cryptbreaker: You may cast target creature, instant or sorcery card from your graveyard this turn. If that spell would be put into your graveyard, exile it instead. Activate only during your turn.

Ghost Sloop can't be blocked.
Crew 4 (Tap any number of creatures you control with total power 4 or greater: This Vehicle becomes an artifact creature until end of turn.)
Exile a creature card from your graveyard: Ghost Sloop becomes an artifact creature until end of turn.

Return target creature card with mana value 3 or less from your graveyard to the battlefield. It gains haste until end of turn.
Monument {3}{B}{R} (You may cast this transformed from your graveyard for its monument cost. Exile it if it would leave the battlefield or not resolve.)

At the beginning of combat on your turn, you may exert an untapped creature you control with power 4 or greater. If you do, attach Giant's Blade to that creature. (An exerted creature won't untap during your next untap step.)
Equipped creature attacks each combat if able.
Equipped creature gets +2/+0 and has haste.
Equip {3}