Crash

You may sacrifice a Mountain rather than pay this spell's mana cost.
Destroy target artifact.

Flailing Manticore

Flying, first strike
{1}: This creature gets +1/+1 until end of turn. Any player may activate this ability.
{1}: This creature gets -1/-1 until end of turn. Any player may activate this ability.

Flailing Ogre

{1}: This creature gets +1/+1 until end of turn. Any player may activate this ability.
{1}: This creature gets -1/-1 until end of turn. Any player may activate this ability.

Flailing Soldier

Fountain Watch

Artifacts and enchantments you control have shroud. (They can't be the targets of spells or abilities.)

Flaming Sword

Flash
Enchant creature
Enchanted creature gets +1/+0 and has first strike.

Furious Assault

Whenever you cast a creature spell, this enchantment deals 1 damage to target player or planeswalker.

Gerrard's Irregulars

Hammer Mage

{X}{R}, {T}, Discard a card: Destroy all artifacts with mana value X or less.

Hired Giant

When this creature enters, each other player may search their library for a land card and put that card onto the battlefield. Then each player who searched their library this way shuffles.

Kris Mage

{R}, {T}, Discard a card: This creature deals 1 damage to any target.

Kyren Glider

Kyren Legate

If an opponent controls a Plains and you control a Mountain, you may cast this spell without paying its mana cost.
Haste

Kyren Negotiations

Tap an untapped creature you control: This enchantment deals 1 damage to target player or planeswalker.

Kyren Sniper

At the beginning of your upkeep, you may have this creature deal 1 damage to target player or planeswalker.

Alabaster Wall

Defender (This creature can't attack.)
{T}: Prevent the next 1 damage that would be dealt to any target this turn.

Mercadian Masques