Goblin Fire Fiend

Haste
Goblin Fire Fiend must be blocked if able.
{R}: Goblin Fire Fiend gets +1/+0 until end of turn.

Viashino Slasher

{R}: Viashino Slasher gets +1/-1 until end of turn.

Fiery Conclusion

As an additional cost to cast this spell, sacrifice a creature.
Fiery Conclusion deals 5 damage to target creature.

Ogre Gatecrasher

When Ogre Gatecrasher enters, destroy target creature with defender.

Fencer's Magemark

Enchant creature
Creatures you control that are enchanted get +1/+1 and have first strike.

Seal of Fire

Sacrifice Seal of Fire: It deals 2 damage to any target.

Goblin Spelunkers

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)

Coalhauler Swine

Whenever Coalhauler Swine is dealt damage, it deals that much damage to each player.

Whiptail Moloch

When Whiptail Moloch enters, it deals 3 damage to target creature you control.

Psychotic Fury

Target multicolored creature gains double strike until end of turn.
Draw a card.

Dogpile

Dogpile deals damage to any target equal to the number of attacking creatures you control.

Seismic Spike

Sell-Sword Brute

When Sell-Sword Brute dies, it deals 2 damage to you.

Viashino Fangtail

{T}: Viashino Fangtail deals 1 damage to any target.

Sabertooth Alley Cat

Sabertooth Alley Cat attacks each combat if able.
{1}{R}: Creatures without defender can't block Sabertooth Alley Cat this turn.

Galvanic Arc

Enchant creature
When Galvanic Arc enters, it deals 3 damage to any target.
Enchanted creature has first strike.

Torpid Moloch

Defender (This creature can't attack.)
Sacrifice three lands: Torpid Moloch loses defender until end of turn.

Rain of Embers

Rain of Embers deals 1 damage to each creature and each player.

Barbarian Riftcutter

{R}, Sacrifice Barbarian Riftcutter: Destroy target land.

Smash

Utvara Scalper

Flying
Utvara Scalper attacks each combat if able.

Sandstorm Eidolon

{R}, Sacrifice Sandstorm Eidolon: Target creature can't block this turn.
Whenever you cast a multicolored spell, you may return Sandstorm Eidolon from your graveyard to your hand.