msem-instigator

When Frisky Denmates enters, create a 2/1 red and white Fox creature token, then Frisky Denmates deals damage to target creature or planeswalker an opponent controls equal to the number of Foxes you control.

Target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (You may cast that card from your graveyard for its flashback cost. Then exile it. Mana cost includes color.)

Whenever one or more cards leave your graveyard for the first time each turn, each player loses 1 life and you draw a card.

Tap up to one target nonland permanent and put a stun counter on it.
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.”)

Reveal the top six cards of your library. Put all noncreature cards revealed this way into your graveyard, put the rest back on top in any order, then draw cards equal to the number of cards put on top.

At the beginning of your end step, if a card left your graveyard this turn, create a 3/1 black Human Rogue creature token named Shengin Renegade.

You gain 3 life and you mill three cards.
Coalesce {5}{G} (You may cast this from your graveyard for {5}{G}. If you do, it enters as a Horror creature after it resolves. Exile it if it would leave the battlefield or not resolve.)

All creatures get -2/-2 until end of turn.

Vigilance
Warriors you control have ward {X}, where X is the number of Warriors you control. (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {X}.)

Ward {2}
As long as you control six or more lands, Frondpond Errand-Runner gets +2/+0 and can't be blocked.

Trample
Menagerie — Whenever Frondpond Fledglings attacks, if there are five or more creature types among creatures you control, put a +1/+1 counter on it.

Trample
Frontier Hoof gets +1/+1 for each other Centaur you control.

Trample

Flash
When Frontier Paragon enters, untap all creatures you control.

When Frontier Scouts enters, reveal the top card of your library. If it's a land, put it onto the battlefield tapped.

Improve {G} ({G}: Put a +1/+1 counter on this creature. This costs {1} more to activate for each +1/+1 counter on it. Improve only as a sorcery.)
When Frontier Trackers dies, create a 1/1 green Elf creature token.

Improve {W} ({W}: Put a +1/+1 counter on this creature. This costs {1} more to activate for each +1/+1 counter on it. Improve only as a sorcery.)
Whenever Frontier Wayfinder attacks, untap each other creature you control.

Frontline Banneret has first strike as long as it's your turn.
When Frontline Banneret enters, put a +1/+1 counter on another target Knight or Soldier you control.

Motivate 1 (When this creature enters, you may motivate target creature with less power than this by putting a +1/+1 counter on it.)

First strike
When Frontline Descender enters, you may salvage an instant or sorcery card. (Exile one from your graveyard until this creature leaves the battlefield. Whenever this creature deals combat damage to a player, put a card it salvaged into your hand.)

First strike

When Frontline Veteran enters, you may sacrifice another creature or artifact. If you do, draw a card.

When Frost Walker becomes the target of a spell or ability, sacrifice it.

Flying
Artifact spells you cast cost {1} less to cast.

Deception {2}{U} ({2}{U}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever Frostclaw Shinobi deals combat damage to a player, scry 1, then draw a card.