msem-instigator

Gestalt (When this or another creature enters under your control, you may merge it with the one in play, keeping counters and attachments. They become the permanent on top plus all abilities from under it.)
This creature gets +2/+2 as long as it's merged with another card or token.

You draw two cards and you lose 2 life.
Inscribe {3}{B}{B} ({3}{B}{B}: Exile this card from your hand inscribed on a creature you control. Whenever that creature attacks, its controller may cast a copy of the inscribed card without paying its mana cost. Inscribe only as a sorcery.)

Haste
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.)

When Fearless Recruit dies, create a 1/1 white Rebel creature token.

Put a +1/+1 counter on target creature you control if it's a Warrior. Then it fights up to one target creature you don't control.

When Feathered Dancer enters, up to three target creatures can't block this turn.

Whenever you cast a spell that doesn't share a color with Feathered Warden, you may gain 1 life.

Put a +1/+1 counter on target creature, then you gain 1 life for each +1/+1 counter among creatures you control.

Each player sacrifices a creature. Create a tapped 2/2 black Zombie creature token.

When Felhide Marauder enters, if you control a creature with power greater than its base power, Felhide Marauder gains haste until end of turn.

Return up to two target creature cards from your graveyard to your hand. If you control a creature with power greater than its base power, you gain 3 life.

When Fell Lantern-Bearer enters, choose one —
• Remove a defense counter from each battle you control.
• Put a +1/+1 counter on each other creature you control with a +1/+1 counter on it.

You gain 3 life. Choose one —
• Destroy target artifact.
• Destroy target enchantment.
• Destroy target creature with flying.

Battalion — Whenever Fellor Bloodseeker and at least two other creatures attack, Fellor Bloodseeker gains lifelink until end of turn.

Armed — Fellor Elite has double strike as long as it's equipped.

First strike

Haste
{1}{W}: Fellor Heartstriker gains lifelink until end of turn.

Battalion — Whenever Fellor Raider and at least two other creatures attack, Fellor Raider deals 2 damage to defending player.

Harmony — Target creature you control gets +1/+0 and gains first strike until end of turn.
When Fellor War-Skald enters, harmonize. (Trigger up to one harmony of a permanent you control.)

{T}: Add {G}.

Target creature gains double strike until end of turn. Mill a card.

Double strike
When Fencing Tutor enters, create a 0/1 white Soldier creature token with double strike.

Fennec Fostress gets +1/+0 for each Aura you control.

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Trample
When Feral Devout enters, choose one —
• Put a +1/+1 counter on Feral Devout.
• Create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”