Fireball

Sorcery

This spell costs {1} more to cast for each target beyond the first.

Fireball deals X damage divided evenly, rounded down, among any number of targets.

Commander bracket

3 +

Bracket 3 and up — Upgraded

In 2 two-card combos

Derived from card traits, not a ruling — bracket rules turn on how a deck intends to use a card. Bracket rules

Salt Score 0.25

How much players resent seeing this card. The scale tops out around 3.1.

Yavimaya Bloomsage // Channel+Fireball

Near-infinite damage

Channel+Fireball

Near-infinite damage

Standard Not legal

Pioneer Not legal

Modern Legal

Legacy Legal

Vintage Legal

Pauper Legal

Commander Legal

Oathbreaker Legal

Duel Commander Legal

Brawl Not legal

Standard Brawl Not legal

Historic Not legal

Timeless Not legal

Alchemy Not legal

Penny Legal

Premodern Legal

PreDH Legal

Pauper EDH Legal

Old School Legal

Future Not legal

Gladiator Not legal

2017-11-17
Fireball's damage is divided as Fireball resolves, not as it's cast, because there are no choices involved. The division involves only targets that are still legal as Fireball resolves.
2017-11-17
For example, if X is 5 and you choose three target creatures, Fireball has a total cost of (even though its mana cost is just and its mana value is 6). If those creatures are all still legal targets as Fireball resolves, it deals 1 damage to each of them.
2017-11-17
You can target more than X creatures. However, if the number of legal targets at the time Fireball resolves is greater than X, none of them will be dealt any damage.
2017-11-17
You may cast Fireball with zero targets, regardless of the value chosen for X. If you do so, it will not be a targeted spell, and no damage will actually be dealt when it resolves.