Have

Fiery Hellhound

{R}: Fiery Hellhound gets +1/+0 until end of turn.

Incandescent Soulstoke

Other Elemental creatures you control get +1/+1.
{1}{R}, {T}: You may put an Elemental creature card from your hand onto the battlefield. That creature gains haste until end of turn. Sacrifice it at the beginning of the next end step.

Lightning Elemental

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

Pyroclasm

Pyroclasm deals 2 damage to each creature.

Mountain

Flame Slash

Flame Slash deals 4 damage to target creature.

Shock

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Stigma Lasher

Wither (This deals damage to creatures in the form of -1/-1 counters.)
Whenever Stigma Lasher deals damage to a player, that player can't gain life for the rest of the game.

Searing Blood

Searing Blood deals 2 damage to target creature. When that creature dies this turn, Searing Blood deals 3 damage to the creature's controller.

Kiln Fiend

Whenever you cast an instant or sorcery spell, Kiln Fiend gets +3/+0 until end of turn.