Inferno Elemental

Whenever this creature blocks or becomes blocked by a creature, this creature deals 3 damage to that creature.

Jackal Familiar

This creature can't attack or block alone.

Target creature gets +1/+0 and gains first strike until end of turn. (It deals combat damage before creatures without first strike.)

Lava Axe deals 5 damage to target player or planeswalker.

Lightning Bolt deals 3 damage to any target.

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

Flying
When this creature dies, it deals 3 damage to each creature and each player.
{3}{R}{R}: Return this card from your graveyard to your hand.

Whenever a player taps a land for mana, this enchantment deals 1 damage to that player.

Enchant creature
Enchanted creature gets +1/+2.

Up to three target creatures can't block this turn.

{T}: This creature deals 1 damage to any target.

Pyroclasm deals 2 damage to each creature.

Seismic Strike deals damage to target creature equal to the number of Mountains you control.

Flying
{R}: This creature gets +1/+0 until end of turn.