Mountain

Krenko's Command

Create two 1/1 red Goblin creature tokens.

Pyrite Spellbomb

{R}, Sacrifice Pyrite Spellbomb: It deals 2 damage to any target.
{1}, Sacrifice Pyrite Spellbomb: Draw a card.

Expedite

Target creature gains haste until end of turn.
Draw a card.

Shock

Red Elemental Blast

Choose one —
• Counter target blue spell.
• Destroy target blue permanent.

Raging Goblin

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

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Seething Song

Rite of Flame

Add {R}{R}, then add {R} for each card named Rite of Flame in each graveyard.

Kessig Flamebreather

Whenever you cast a noncreature spell, Kessig Flamebreather deals 1 damage to each opponent.

Dragon Fodder

Tormenting Voice

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

Pyroblast

Choose one —
• Counter target spell if it's blue.
• Destroy target permanent if it's blue.

Chain Lightning

Chain Lightning deals 3 damage to any target. Then that player or that permanent's controller may pay {R}{R}. If the player does, they may copy this spell and may choose a new target for that copy.

Faithless Looting

Draw two cards, then discard two cards.
Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Firebrand Archer

Whenever you cast a noncreature spell, Firebrand Archer deals 1 damage to each opponent.