msem-instigator

Flying, vigilance
At the beginning of your end step, return up to one target creature card from your graveyard to the battlefield. If a creature isn't returned this way, create a 4/4 Elemental creature token that's all colors.

Lifelink
Vanishing 3 (This creature enters with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)

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

Menace, lifelink
When Fallen Hero leaves your graveyard, if it wasn't exiled, you may return target creature card not named Fallen Hero from your graveyard to your hand.

This spell costs {1} less to cast for each permanent sacrificed this turn.
Fallen Sluagh can't be blocked by creatures with power 2 or less.

When False-Cure Smuggler enters, put a -1/-1 counter on another target creature.
{1}{U}, Sacrifice a creature: Proliferate. (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)

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.

First strike
When Faradia's Collector enters, if an opponent controls more lands than you, create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”

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

Enchantment spells you cast cost {1} less to cast.

Whenever Fated Mariner attacks, forebode. (Create a tapped colorless Omen artifact token with “{T}, Discard a card, Sacrifice this artifact: Draw a card.”)
{1}{U}: Fated Mariner can't be blocked this turn.

When Fateshifter's Prophet enters, you gain 2 life and scry 2.

When Fatethief dies, put the bottom card of your library into your hand.
Revive {2}{B}{B} ({2}{B}{B}, Exile this card from your graveyard: Create a token that's a copy of it except it has no mana cost. Revive only as a sorcery.)

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.

First strike
Sacrifice Fearless General: Soldiers you control gain indestructible until end of turn.

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

Whenever you draw your second card each turn, draw a card.

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

Flying, first strike, lifelink

When Fel Alston, Halfway Queen enters, return target creature card from your graveyard to the battlefield. Then exile that creature unless Fel Alston was cast for its escape cost.
Escape—{1}{W}{U}{B}, Sacrifice two creatures. (You may cast this card from your graveyard for its escape cost.)

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.

Equipment spells you cast cost {1} less to cast.
Armed — As long as Fellor Armorsmith is equipped, equip abilities you control cost {1} less to activate.

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