Trample
Whenever you gain control of a permanent you don't own or a permanent you don't own enters under your control, it and Field Opportunist each get +2/+0 and gain haste until end of turn.

Enchant land
Enchanted land has “{T}: Add one mana of any color.”

Choose one or both —
• Target Human creature you control gets +1/+1 and gains indestructible until end of turn.
• Target non-Human creature you control gets +1/+1 and gains indestructible until end of turn.

Choose one or both —
• Target Kraken, Leviathan, Octopus, or Serpent creature you control gets +2/+1 until end of turn.
• Target creature you control fights target creature you don't control.

Before equipped creature would assign, deal, or be dealt damage, sacrifice Figy Berry. If you do, equipped creature gets +2/+2 until end of turn.
Equip {1}
{7}, Sacrifice Figy Berry: Destroy target nonland permanent.

Destroy target creature if its mana value is less than or equal to the amount of mana spent to cast this spell.
Flashback {X}{B}{B}{B}

Final Performance deals 2 damage to target creature. If a creature died this turn, instead Final Performance deals 5 damage to it, and excess damage is dealt to that creature's controller instead.

Firebolt deals 2 damage to any target.
Flashback {4}{R}

Draw a card. If you control no creatures, create a 1/1 colorless Cyborg artifact creature token.

When Flags on High enters, create two 1/1 colorless Soldier creature tokens.
{1}{R}, Sacrifice Flags on High: Target creature you control gets +1/+0 and gains haste until end of turn. Activate only as a sorcery.

Flame Lash deals 4 damage to any target.

Reach
{3}{R/G}: Flametip Goliath gets +2/+0, gains trample, and becomes a Giant in addition to its other types until end of turn.

As long as its not your turn, spells you cast cost {1} less to cast.

Haste
Whenever a player casts a spell, if no mana from a basic source was spent to cast it, Flaw in the System deals 2 damage to that player.

Whenever a creature dealt damage by Fleshbearer this turn dies, integrate that creature.
Fleshbearer gets +2/+0 and has menace as long as a creature card is integrated onto it.

Vigilance
{T}: Surveil 1.
Surface {3}{U}

Approval — When Flock Favorites enters, exile the top X cards of your library, where X is the number of colors among permanents you control. Until the end of your next turn, you may play those cards.

Whenever Floe Master enters or another creature you control surfaces, tap up to one target creature and put a stun counter on it.
Surface {5}{U}{U}

Flash
At the beginning of your end step, if you control three or more untapped lands, put a +1/+1 counter on Flow Grandmaster.

Flash
Flying
{VP}{VP}{VP}: Draw a card.

Flying
Whenever you amp it up, draw a card, then discard a card.

This spell costs {1} less to cast if it targets a spell you control and costs {1} less to cast if it targets a spell with mana value 3 or less.
Copy target spell. You may choose new targets for the copy.

Flying
{T}: Add {C}.
Spellcharge 4

Flying
Amity — Whenever you attack with Fluttering Firefly and exactly one other creature, target creature you control gets +2/+0 until end of turn.

Deathtouch
{1}{W}, {T}: Create a Berry token.
{2}{B}, Sacrifice a Berry: Put a +1/+1 counter on Foraging Grub.