
Sorcery
Target creature you control deals damage equal to its power to each other creature and each opponent.

Direct damage spell that scales, similar burst payoff for creature-based decks.

Mass creature damage board wipe in red, common alongside Ignition.

Big red sweeper dealing 20 damage to all creatures.

No—skip

Repeatable damage to all creatures and players for board control.

Scalable multi-target burn that can hit each opponent.

No

Big single-target burn, similar power-based reach effect.

Combos with Ignition to redirect creature damage to opponents.
The creature is the source of the damage, not Chandra's Ignition. For example, Chandra's Ignition can have a white creature deal damage to a creature with protection from red.
Use the power of the target creature as Chandra's Ignition resolves to determine how much damage it deals to each other creature and each opponent.
If the creature becomes an illegal target by the time Chandra's Ignition tries to resolve (perhaps because another player controls it or it's left the battlefield), Chandra's Ignition won't resolve and none of its effects will happen. No damage will be dealt.