Seismic Elemental

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

Mountain

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

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

Volcanic Geyser deals X damage to any target.

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

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

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

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

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

Bloodrock Cyclops attacks each combat if able.

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

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

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