msem-instigator

Menace
Pay 2 life: Investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)
Sacrifice a permanent: Darna gets +1/+1 until end of turn.

When Dawson's Enforcer enters, draw a card if you sacrificed a permanent or discarded a card this turn.

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever a creature you don't control blocks, it gets -1/-0 until end of turn.

Engage (This creature must be blocked each combat if able.)
Whenever Death Pits Gladiator perseveres, profit. (A creature perseveres when it survives damage. To profit, create a colorless Gold artifact token with “Sacrifice this artifact: Add one mana of any color.”)

You can't cast this spell as long as your life total is greater than half your starting life total.
Lifelink
{1}{B}{G}, Discard Death's Widow: Destroy target nonland permanent. You lose life equal to its mana value.

As an additional cost to cast Deepmire Abomination, reappropriate or pay {2}. (To reappropriate, exile exactly two cards from your hand and/or graveyard.)
Menace

Defender
Sacrifice two Islands: Deepsea Denizen loses defender until end of turn.

Whenever Defective Abomination attacks, you may sacrifice a permanent. If you do, put a +1/+1 counter on it. It gains indestructible until end of turn.

When Defiler of Farmsteads enters, each opponent loses 2 life and you gain 2 life.

Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)
Each creature you control with a counter on it has ward {2}. (If a creature has multiple instances of ward, each triggers separately.)

Delusional Noble enters with a -1/-1 counter on it.

At the beginning of each player's end step, that player sacrifices a permanent.

At the beginning of your end step, if you've sacrificed three or more permanents this turn, return Demon of Necessary Evil from your graveyard to the battlefield.

When Depthlight Brute enters, if you control three or more artifacts, each opponent loses 3 life and you gain 3 life.

Flying
When Derevi's Adjutant enters, put a +1/+1 counter on each other creature you control.
Cycling {2} ({2}, Discard this card: Draw a card.)
When you cycle Derevi's Adjutant, exile it. You may cast it from exile for as long as it remains exiled.

Tribute 2 (As this creature enters, an opponent of your choice may put two +1/+1 counters on it.)
At the beginning of your upkeep you lose life equal to the number of +1/+1 counters on Descendant of Caaseb.

Trample
When Descendant of Shimaru enters, create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)

Determined Chevalier has vigilance as long as it's embattled. (A creature is embattled if it has a counter on it or a permanent you control attached to it.)

Flying
At the beginning of your upkeep, exile the top or bottom card of target player's library. That player loses life equal to that card's mana value.

Converge — Dirty-Pawed Grazer enters with a +1/+1 counter on it for each color of mana spent to cast it.
Dirty-Pawed Grazer can't be blocked by creatures with power 2 or less.

Lionize {G} ({G}, Exile this card from your hand: Put a +1/+1 counter on target creature and it gains the following abilities until end of turn. You may cast this card on a later turn from exile.)
Vigilance, reach

Flash
When Div of Unsettling Secrets enters, exile target permanent or spell. Its controller draws two cards.

When Divine Shell enters, create three Function tokens with “Tap target creature.” (They're enchantments. As you cast an instant or sorcery spell, sacrifice any number of Functions to add their effects to that spell.)

{1}, Sacrifice a creature: Create a Treasure token. Exile the top card of your library. You may play that card this turn.

Haste
When Doomed Alchemist dies, create two Treasure tokens. (They're artifacts with “{T}, Sacrifice this artifact: Add one mana of any color.”)