msem-instigator

Enchant creature you control
Enchanted creature gets +2/+2.
When enchanted creature dies, return Alabaster Halo to the battlefield transformed under your control.

Flying, vigilance
Whenever Alabaster Avenger attacks, if it's enchanted or equipped, it gains first strike until end of turn.

Create two 1/1 white Human creature tokens.

This spell costs {X} less to cast, where X is the amount of life you've gained this turn.
Flying
When Angel of Sunrise enters, each opponent exiles a Spirit, Vampire, Werewolf, Zombie, or double-faced permanent they control.

Flying, vigilance
At the beginning of your end step, return up to one target permanent card from your graveyard to the battlefield with an indestructible counter on it.

Choose one —
• You gain hexproof until end of turn.
• Target creature you control gains double strike until end of turn.
• Exile target card from a graveyard. You gain 4 life.

At the beginning of your end step, if you control two or more artifacts and/or enchantments, transform Avacyn's Partisan.

Lifelink

Return up to two target artifact, creature, and/or enchantment cards with mana value 3 or less from your graveyard to the battlefield.
Flashback {4}{W}{W} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

When Blessed Bladewright enters, create a Weapon token. (It's an Equipment artifact with “Equipped creature gets +1/+1” and equip {2}.)
Whenever an Equipment token you control enters, attach it to up to one target creature you control.

Choose one —
• Creatures you control get +2/+0 until end of turn.
• Destroy target artifact or enchantment. You gain 3 life.

When Candlecrown Stag enters, choose one or both —
• Exile target card from a graveyard.
• You gain 3 life.

When Cathar's Armory enters and at the beginning of your first main phase, create a Weapon token. (It's an Equipment artifact with “Equipped creature gets +1/+1” and equip {2}.)
Whenever one or more creatures you control that are enchanted or equipped deal combat damage to a player, draw a card.

Flying
When Cathedral Gargoyle dies, you gain 2 life and create a Weapon token. (It's an Equipment artifact with “Equipped creature gets +1/+1” and equip {2}.)
Foreshadow {4}{W} (You may cast this spell for its foreshadow cost. If you do, also trigger its “dies” abilities when it enters.)

Cenotaph Possessor gets +1/+1 for each permanent you control that's an artifact, creature, and/or enchantment.
{2}{W}, {T}: Target creature gets +1/+1 for each permanent you control that's an artifact, creature, and/or enchantment. until end of turn. Activate only as a sorcery.

Flash
Flying
When Cobblespook enters, tap target artifact or creature an opponent controls.

Lifelink
Players casting spells and creatures entering don't cause abilities to trigger.

Flying
When Departed Butler enters, draw a card.

First strike
{4}{W}, {T}: Target creature gets +2/+1 and gains first strike until end of turn. Activate only as a sorcery.

Exile target artifact or creature you control, then return that card to the battlefield under its owner's control. Create a 1/1 white Spirit creature token with flying.
Flashback {2}{W} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Untap target creature you control. It gains indestructible until end of turn. Create a Weapon token, then attach it to that creature. (A Weapon token is an Equipment artifact with “Equipped creature gets +1/+1” and equip {2}.)

Create X 4/4 white Angel creature tokens with flying.
Flashback {X}{W}{W}{W}{W}{W} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Tap up to two target creatures. Put a stun counter on one of them. (If a permanent with a stun counter would become untapped, remove one from it instead.)
Flashback {3}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Vigilance
Invocation — Whenever you spend four or more mana to cast a spell or activate an ability during your turn, you gain 2 life.

Vigilance
At the beginning of your end step, if you control two or more Spirits and/or creatures with flying, transform Haunted Waif.