Double target creature's power until end of turn. Flashback {4}{R}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Creatures you control get +2/+0 until end of turn.

Target creature gains double strike until end of turn. When you roll a natural 20, return this card from your graveyard to your hand. (A natural 20 is a roll that displays 20 on the die.)

Target creature gets +X/+0 until end of turn, where X is its power.

{T}: Add one mana of any color in your commander's color identity.

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

As long as this creature is equipped, it has menace. (It can't be blocked except by two or more creatures.)

{R}: Target creature you control gains haste until end of turn. (It can attack and {T} this turn.)

When this creature enters, it deals X damage to target creature an opponent controls, where X is the number of Wizards you control.

Haste Whenever this creature becomes blocked, it deals 1 damage to target creature blocking it.

Flying Whenever this creature attacks, it deals 1 damage to target creature defending player controls.

This spell can't be countered. Flying, haste {R}: Inferno of the Star Mounts gets +1/+0 until end of turn. When its power becomes 20 this way, it deals 20 damage to any target.

Flying, trample Join forces — Whenever this creature attacks or blocks, each player starting with you may pay any amount of mana. This creature gets +X/+0 until end of turn, where X is the total amount of mana paid this way.

Echo {R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) When this creature dies, it deals 2 damage to target player or planeswalker.

Flying Fire Breath — When this creature enters, it deals 4 damage to each opponent.

Flying, haste This creature enters with X +1/+1 counters on it.

Flying When this creature enters, it deals damage to any target equal to the number of Mountains you control.

As long as you've drawn two or more cards this turn, this creature has double strike.

Whenever you cast your second spell each turn, create a 1/1 red Mercenary creature token with "{T}: Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery." Plot {2}{R} (You may pay {2}{R} and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

Whenever a creature you control enters, this enchantment deals 1 damage to each opponent.

Enchant creature you control Enchanted creature gets +2/+0. {R}, Sacrifice this Aura: This Aura deals 2 damage to any target.

The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.

Flame Sweep deals 2 damage to each creature except for creatures you control with flying.