Explosion

Explosion is one of the stronger attack spells available.

Spell Description
The Fireball spell may be a good weapon against weaker foes, but the stronger ones are not usually affected by it. But as the foes become stronger, there also comes available the more potent attack spells, like this one. Explosion sends out a regular fireball, but this is deceptive. Upon contact it explodes with the force of a powder keg, causing massive destruction in its direct surroundings. This spell is not only good for killing tougher foes, but also to blow up massive doors and other obstacles.

Note that the Ultima VII Part Two version of this spell uses blue fire, instead of the regular red-yellow fire, but otherwise acts the same.

Trivia

 * In the C64-Port of Ultima VI, the spell actually is needed in order to get access to the pirate treasure, as the port omitted powder kegs.