Ashmouth Hound

Whenever Ashmouth Hound blocks or becomes blocked by a creature, Ashmouth Hound deals 1 damage to that creature.

Bloodrock Cyclops

Bloodrock Cyclops attacks each combat if able.

Spitting Earth deals damage to target creature equal to the number of Mountains you control.

This spell can't be countered.
Volcanic Fallout deals 2 damage to each creature and each player.

{X}{R}, {T}, Sacrifice Cinder Elemental: It deals X damage to any target.

When Seismic Elemental enters, creatures without flying can't block this turn.

Thriving Bluff enters tapped. As it enters, choose a color other than red.
{T}: Add {R} or one mana of the chosen color.

Volcanic Geyser deals X damage to any target.

{R}, {T}, Exile two cards from your graveyard: Grim Lavamancer deals 2 damage to any target.

{R}: Molten Ravager gets +1/+0 until end of turn.

When Mana Geode enters, scry 1.
{T}: Add one mana of any color.

Magma Jet deals 2 damage to any target. Scry 2.

Magmaquake deals X damage to each creature without flying and each planeswalker.