Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Demonic Tutor

Search your library for a card, put that card into your hand, then shuffle.

Balance

Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest, then sacrifices the rest. Players discard cards and sacrifice creatures the same way.

Wheel of Fortune

Each player discards their hand, then draws seven cards.

Sol Ring

Dark Ritual

Underworld Dreams

Whenever an opponent draws a card, Underworld Dreams deals 1 damage to that player.

City of Brass

Whenever City of Brass becomes tapped, it deals 1 damage to you.
{T}: Add one mana of any color.