Borderland Marauder

Whenever Borderland Marauder attacks, it gets +2/+0 until end of turn.

Pyre Hound

Trample
Whenever you cast an instant or sorcery spell, put a +1/+1 counter on Pyre Hound.

Lavastep Raider

{2}{R}: Lavastep Raider gets +2/+0 until end of turn.

Mountain

Cone of Flame

Cone of Flame deals 1 damage to any target, 2 damage to another target, and 3 damage to a third target.

Blighted Gorge

{T}: Add {C}.
{4}{R}, {T}, Sacrifice Blighted Gorge: It deals 2 damage to any target.

Sparkmage's Gambit

Sparkmage's Gambit deals 1 damage to each of up to two target creatures. Those creatures can't block this turn.

Outnumber

Outnumber deals damage to target creature equal to the number of creatures you control.

Devour in Flames

As an additional cost to cast this spell, return a land you control to its owner's hand.
Devour in Flames deals 5 damage to target creature or planeswalker.

Rolling Thunder

Rolling Thunder deals X damage divided as you choose among any number of targets.

Brute Strength

Target creature gets +3/+1 and gains trample until end of turn. (It can deal excess combat damage to the player or planeswalker it's attacking.)

Valakut Invoker

{8}: Valakut Invoker deals 3 damage to any target.

Cinder Hellion

Trample
When Cinder Hellion enters, it deals 2 damage to target opponent or planeswalker.

Stonefury

Stonefury deals damage to target creature equal to the number of lands you control.