msem-instigator

Exsanguinator enters with X pain counters on it.
Whenever equipped creature attacks, each opponent loses X life and you gain X life, where X is the number of pain counters on Exsanguinator.
Equip {4}

When Extraction Mercenary enters, if you attacked this turn, crystallize. (Put a +1/+1 counter on a creature you control or create a Treasure.)
{4}{R}{R}: Extraction Mercenary deals 3 damage to any target.

Choose one —
• The next spell you cast this turn has flash and can't be countered.
• Target creature gets +2/+0 and gains haste until end of turn.
• Target creature gets +1/+0 and gains first strike until end of turn.

Pressure {X}{U}{U} (You may cast this spell for its pressure cost if seven or more cards are in your graveyard.)
Look at the top card of your library. You may put that card into your graveyard.
Draw a card. If this spell was cast for its pressure cost, draw X cards instead.

{T}, Sacrifice Fabled Passage: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Then if you control four or more lands, untap that land.

Exile the top five cards of your library. You may play one of them from exile this turn.

Exile target permanent. Return that card to the battlefield tapped under its owner's control at the beginning of the next end step.

You may cast this spell as though it had flash if you pay an additional {1} to cast it.

Create a 1/1 blue Faerie Rogue creature token with flying. Scry 2.

Menace
Each opponent's maximum hand size is reduced by the number of counters on Fahrib's Lieutenant.
Whenever an opponent discards a card, put a +1/+1 counter on Fahrib's Lieutenant.

Hexproof
Discard two cards: You may cast target instant or sorcery card in your graveyard this turn. If that spell would be put into a graveyard, exile it instead.
At the beginning of your end step, if you have two or fewer cards in hand, transform Fahrib.

{T}: Add {C}.
{2}, {T}, Sacrifice Failing Port: Draw a card.

Create a 1/1 white Bird creature token with flying.
Monument {2}{W} (You may cast this transformed from your graveyard for its monument cost. Exile it if it would leave the battlefield or not resolve.)

Whenever you draw a card, put a quest counter on Fallback Plan.
Remove four quest counters from Fallback Plan and sacrifice it: Search your library for a card, put that card into your hand, then shuffle.

{3}{G}: Fallen Forest Wolf gets +2/+2 and gains trample until end of turn. Activate only once each turn.

Trample
Fallen Warden's power and toughness are each equal to the number of creature cards in all graveyards.

Codex — Fox of the Orange Orchard; Sludge-Gill Fox; Thundermane Fox; Firemane Fox; Sun-Eyed Fox; Moon-Rune Fox; Leafcrowned Fox; Icecrowned Fox; Fae-Frill Fox. (As this enters, conjure its contents into a shuffled face-up additional library.)
You may spend mana as though it were mana of any color to cast this codex's contents.
Whenever a Fox you control enters, you gain 1 life.

Fang Den Jaws enters tapped unless you played it from exile.
{T}: Add {R} or {G}.

Whenever Fangs of Wesgoth deals combat damage to a player, create a Weapon token. (It's an Equipment artifact with “Equipped creature gets +1/+1” and equip {2}.)
As long as you control three or more artifacts, Fangs of Wesgoth has menace.

Whenever one or more other creatures you control enter, you gain 1 life. If at least one of those creatures was a Cleric, you gain 2 life instead.
As long as you have at least 8 life more than your starting life total, other Clerics you control get +1/+1.

Flying, lifelink

Tithe (As you cast this spell, you may tap three artifacts and/or creatures you control.)
Creatures can't attack this turn. If this spell's tithe was paid, opponents can't cast spells this turn.

Tithe (As you cast this spell, you may tap three artifacts and/or creatures you control.)
Faradia's Outrage deals X damage to any target. If this spell's tithe was paid, it deals X damage divided as you choose among any number of targets instead.

{T}: Add {C}.
{3}, {T}: Put a +1/+1 counter on each Boar, Goat, Horse, Ox, and Sheep creature you control.

{1}{W}, {T}: Aetherize target creature you control. (To aetherize, create a token that's a copy of it, then exile that token.)