msem-instigator

Search your library for a creature card, an instant card and a sorcery card and reveal them. Put one of those cards into your hand, exile the rest, then shuffle.

Codex — Majestic Dominion; Pristine Dominion; Verdant Dominion; Stalwart Dominion; Primal Dominion; Rugged Dominion; Into the Woods. (As this enters, conjure its contents into a shuffled face-up additional library.)
Before you explore this library, you may put a card from the codex's library on top of it.
{3}{G}: Target creature you control explores.

Return target creature or land card from your graveyard to your hand.

Return target creature card from your graveyard to your hand.

Archive 3 (As this enters, shuffle the top three cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
Whenever you draw a card from the archived library, each opponent mills two cards.

Flying
Disgraced 4 (This enters with four -1/-1 counters. Whenever it deals combat damage to a player, remove all -1/-1 counters from it.)
Whenever you put one or more -1/-1 counters on Forgotten Tyrant, it deals that much damage to any target.

When Forgotten Wretch enters, you may sacrifice another creature. If you do, draw a card.

Forked Pillar deals 2 damage to target creature. When that creature dies this turn, Forked Pillar deals 1 damage to that creature's controller.

{B}{R}, Sacrifice a creature: Create a token that's a copy of Forlorn Companion, except it has no mana cost.

When Forlorn Farmhand dies, create a 1/1 colorless Spirit creature token.

When Forlorn Murklurker dies, submerge the top card of your library. (To submerge a card, exile it, then put it on the battlefield face down under its owner's control as a 2/2 creature.)

{1}{G}, {T}, Sacrifice another nontoken creature: Create two tokens that are copies of the sacrificed creature, except they're 0/1. Activate only as a sorcery.

When Forlorned Knight enters, you may sacrifice another creature. If you do, create two 1/1 white Human creature tokens.
Whenever you attack, if another creature died under your control this turn, creatures you control get +1/+1 until end of turn.
Fleeting {W}{B} (You may cast this spell for its fleeting cost. If you do, sacrifice it at the beginning of the next end step.)

Target creature you control gets +3/+0 and gains lifelink and indestructible until end of turn.

Enchant creature
Enchanted creature has deathtouch and menace.
{G}{U}: Enchanted creature gains hexproof and indestructible until end of turn. Tap it.
{R}: Enchanted creature gets +1/+0 until end of turn.

Enchant creature
Enchanted creature gets +2/+2 and has flying and haste.
When enchanted creature dies, return it to the battlefield under its owner's control.

When Form of the Sunbird enters, it deals 4 damage to each creature. Your life total becomes 4.
If you would lose the game, instead transform Form of the Sunbird.

Exile target creature you control, then each other player may exile a creature they control. Each player who exiled a creature this way reveals cards from the top of their library until they reveal a creature card with mana value different from the creature they exiled, puts that card onto the battlefield, then shuffles.

Flash
Enchant creature
Enchanted creature has erratic. (When this creature dies, reveal the top four cards of your library. Put a creature card that costs less than this revealed this way onto the battlefield and the rest on the bottom of your library in any order.)

Choose any number of target creature and/or planeswalker cards in your graveyard. Return one of them to the battlefield and put the rest on top of your library in any order.

Defender, trample
Tap any number of other untapped creatures you control with total toughness 8 or greater: Formidable Bulkvine's base power becomes 8 until end of turn and it can attack this turn as though it didn't have defender.

Flying, vigilance
When Formless Eidolon enters, create a tapped token that's a copy of target land you control.
Evoke {3} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Hexproof
Whenever you cast a spell with mana value 5 or greater, each opponent discards a card and loses 3 life.

Exile all creatures with power 4 or greater.

Flying
Mark (Whenever this creature attacks, mark target creature until end of turn.)
Whenever a marked creature dies, you gain 2 life.