Arc Runner

Haste (This creature can attack and {T} as soon as it comes under your control.)
At the beginning of the end step, sacrifice this creature.

Lightning Talons

Enchant creature
Enchanted creature gets +3/+0 and has first strike. (It deals combat damage before creatures without first strike.)

Wild Guess

As an additional cost to cast this spell, discard a card.
Draw two cards.

Inferno Fist

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

Lightning Elemental

Haste (This creature can attack and {T} as soon as it comes under your control.)

Pyretic Ritual

Wall of Torches

Incite

Target creature becomes red until end of turn and attacks this turn if able.

Fire Diamond

This artifact enters tapped.
{T}: Add {R}.

Incinerate

Incinerate deals 3 damage to any target. A creature dealt damage this way can't be regenerated this turn.

Searing Spear

Searing Spear deals 3 damage to any target.

Fire Elemental

Lava Axe

Lava Axe deals 5 damage to target player or planeswalker.

Lightning Strike

Lightning Strike deals 3 damage to any target.

Firebreathing

Enchant creature
{R}: Enchanted creature gets +1/+0 until end of turn.

Shock

Fireball

This spell costs {1} more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.

Inferno Elemental

Whenever this creature blocks or becomes blocked by a creature, this creature deals 3 damage to that creature.

Molten Birth

Create two 1/1 red Elemental creature tokens, then flip a coin. If you win the flip, return Molten Birth to its owner's hand.

Ball Lightning

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Haste (This creature can attack and {T} as soon as it comes under your control.)
At the beginning of the end step, sacrifice this creature.