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

Flying

When Ashcloud Phoenix dies, return it to the battlefield face down under your control.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

When Ashcloud Phoenix is turned face up, it deals 2 damage to each player.

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

At the beginning of each end step, each player who tapped a land for mana this turn sacrifices a land. Desolation deals 2 damage to each player who sacrificed a Plains this way.

Farideh's Fireball deals 5 damage to target creature or planeswalker. Roll a d20.

1–9 | Farideh's Fireball deals 2 damage to each player.

10–20 | Farideh's Fireball deals 2 damage to each opponent.

Flame Rift deals 4 damage to each player.

You and target opponent each flip a coin. Mana Clash deals 1 damage to each player whose coin comes up tails. Repeat this process until both players' coins come up heads on the same flip.

Price of Progress deals damage to each player equal to twice the number of nonbasic lands that player controls.

Choose a color. Searing Rays deals damage to each player equal to the number of creatures of that color that player controls.

Spectacle (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.)

Flying, trample

At the beginning of your upkeep, Spawn of Mayhem deals 1 damage to each player. Then if you have 10 or less life, put a +1/+1 counter on Spawn of Mayhem.

Each player secretly chooses a number 0 or greater, then all players reveal those numbers simultaneously and determine the highest and lowest numbers revealed this way. Wheel of Misfortune deals damage equal to the highest number to each player who chose that number. Each player who didn't choose the lowest number discards their hand, then draws seven cards.