msem-instigator

Choose two or four —
• Return target nonland permanent to its owner's hand.
• Each player sacrifices a creature.
• Each player sacrifices a noncreature, nonland permanent.
• Conjure a card named Fatigue and put it on top of your library. (It's a colorless sorcery that costs {2} with “Draw a card.”)

Lifelink
At the beginning of each player's end step, that player discards each card in their hand, then draws that many cards. When no cards are discarded this way, Dayang, Aspiring Muse deals 2 damage to each opponent.

Discard your hand, then draw two cards.
Conjure a card named Fatigue and put it on top of your library. (It's a colorless sorcery that costs {2} with “Draw a card.”)

Choose one—
• Destroy target noncreature, nonland permanent.
• Put a -1/-1 counter on each creature.

Equipped creature gets +4/+2.
Equip—Sacrifice a creature. (Sacrifice a creature: Attach to target creature you control. Equip only as a sorcery.)

Return up to two target creature cards from your graveyard to your hand.
Coalesce {7}{B} (You may cast this from your graveyard for its coalesce cost. If you do, put it onto the battlefield as a Horror creature after it resolves. Exile it if it would leave the battlefield or not resolve.)

Choose target creature card in your graveyard that was put there from the battlefield this turn. Return that card to the battlefield tapped.
Fabled {3}{B}{B} (Then if you cast this for its fabled cost, put it onto the battlefield transformed attached to that creature.)

When Debt Dignitary enters the battlefield, tap target nonland permanent. That permanent doesn't untap during its controller's untap step for as long as you control Debt Dignitary.

Whenever another creature enters the battlefield under your control, you may change Declan, Wayward Squire's base power and toughness to that creature's power and toughness until end of turn.

Indestructible (Damage and effects that say “destroy” don't destroy this creature.)
Whenever Declare, the Mother Bear deals combat damage to a player, put a +1/+1 counter on it.

Menace (This creature can't be blocked except by two or more creatures.)

{T}, Sacrifice Decrepit Crags: Search your library for a Swamp or Mountain card and put it onto the battlefield tapped, then shuffle.

This spell can't be countered.
You can't lose the game this turn and your opponents can't win the game this turn. Until end of turn, damage that would reduce your life total to less than 1 reduces it to 1 instead.

Deft Goldsnatch can't be blocked.

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

Whenever an opponent casts a spell, harmonize. (Trigger up to one harmony of a permanent you control.)
Harmony — Spells your opponents cast cost an additional 2 life to cast until your next turn.

Hexproof
Rapport — Whenever Depths Stalker and at least one other creature you control become tapped, Depths Stalker gets +1/+0 until end of turn and can't be blocked this turn.

({T}: Add {R}.)
Derelict Amphitheatre enters the battlefield tapped.
{R}, {T}, Reveal a red card from your hand: Scry 1. (To scry 1, look at the top card of your library. You may put that card on the bottom of your library.)

Whenever an opponent fails a trial, create a 1/1 white Angel creature token with flying.

Haste
Whenever Desperate Reconnoiterer becomes untapped, scry 1.

Rapport — Whenever Desraen, Serpent's Will and at least one other creature you control become tapped, you may cast target instant or sorcery card with mana value 3 or less from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead.

When Destiny Beyond Measure enters the battlefield, tap each creature you control.
Creatures you control get +8/+8 and have “This creature enters the battlefield tapped.”

When Disassociate enters the battlefield, exile target creature until Disassociate leaves the battlefield.

{1}: Draw a card, then put a card from your hand on top of your library.

Other enchantments have “At the beginning of your upkeep, pay {1} or sacrifice this enchantment.”