msem-instigator

When Blessing from Wings on High enters, you may search your library for an Angel or Nephilim card, reveal it, put it into your hand, then shuffle.
Creatures you control get +1/+0.

Other Wolves and Werewolves you control get +1/+1.
Whenever Hungering Howlpack or another Wolf or Werewolf you control enters, you gain 2 life.

When Suitor of the Glade enters, put two +1/+1 counters on target creature you control. It gains vigilance until end of turn.

As an additional cost to cast this spell, tap an untapped Warlock you control.
Search your library for a card and put it into your hand or graveyard, then shuffle.

Reach
Whenever Thicketwalker attacks, you may tap or untap target land.

{T}: Scry 1.
{1}{U}, {T}: Draw a card.

Creatures you control get +1/+1 until end of turn.
Lifecycle {3} ({3}, Discard this card: Create two tapped 1/1 colorless Elemental creature tokens.)

When Kizoku Valiant enters or dies, you gain 2 life.
Art of war — At the beginning of your end step, if Kizoku Valiant dealt damage to an opponent this turn, put a +1/+1 counter on it.

({T}: Add {R} or {G}.)
As Ruptured Trail enters, you may pay {1}. If you don't, Ruptured Trail enters tapped.

Whenever you foretell a card or cast a foretold spell, Bugrund's Schemer deals 2 damage to each opponent.

I, II — Return target creature card from your graveyard to your hand.
Discovery — {2}{B}, Sacrifice a creature: Each opponent loses 2 life and you gain 2 life.

Put target nonland permanent on top of its owner's library.
Draw a card.

Exile target creature you control, then return that card to the battlefield under its owner's control. 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.”)

This spell costs {1} less to cast for each instant and sorcery card in your graveyard.
When Vedalken Reshaper enters, return target instant or sorcery card from your graveyard to your hand.

Sleight (You may cast this spell as though it had flash if you pay {1} more to cast it.)
Enchant creature you don't control
Embody (Enchanted creature is a copy of this card except for its types.)

Tap an untapped Desert you control: Hostile Atmosphere deals 1 damage to any target.

Whenever you play a land, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)
{1}{G}{U}{R}, Sacrifice three Clues: Exile cards from the top of your library until you exile three nonland cards. You may cast any number of those cards without paying their mana costs.

You may pay {B} and 4 life rather than pay this spell's mana cost.
Target creature gets -5/-5 until end of turn.

Create a 3/3 black Demon Horror creature token.
Compose (Then if you cast this from your hand, exile it and create a Saga token with “r3—You may cast a copy of this card from exile without paying its mana cost.”)

When Paleontologist enters, search your library for up to two artifact and/or Skeleton cards and put them into your graveyard, then shuffle.

Whenever you cast a spell from anywhere other than your hand, you may sacrifice a creature. If you do, copy that spell. You may choose new targets for the copy.

Lionize {1}{G} ({1}{G}, Exile this card from your hand: Put a +1/+1 counter on target creature and it gains the following ability until end of turn. You may cast this card on a later turn from exile.)
This creature assigns combat damage equal to its toughness rather than its power.

Choose one —
• Destroy target artifact.
• Destroy target enchantment.
• Destroy target creature with flying.

When Hellion Devastator enters, destroy up to one target nonland permanent with mana value 3 or less.
Cycling {2} ({2}, Discard this card: Draw a card.)

This spell can't be countered.
Trample
Whenever an opponent draws a card except the first one they draw in each of their draw steps, put a +1/+1 counter on Kareki Magehunter.