Blasphemous Act

This spell costs {1} less to cast for each creature on the battlefield.
Blasphemous Act deals 13 damage to each creature.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Sol Ring

Acidic Soil

Acidic Soil deals damage to each player equal to the number of lands they control.

Airdrop Condor

Flying
{1}{R}, Sacrifice a Goblin creature: Airdrop Condor deals damage equal to the sacrificed creature's power to any target.

Abrade

Choose one —
• Abrade deals 3 damage to target creature.
• Destroy target artifact.

Bonfire of the Damned

Bonfire of the Damned deals X damage to target player or planeswalker and each creature that player or that planeswalker's controller controls.
Miracle {X}{R} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

Aether Sting

Whenever an opponent casts a creature spell, Aether Sting deals 1 damage to that player.