As fireball, except this spell is more powerful and can
detonate up to 5 rounds after the spell is cast. The burst of
flame detonates with a low roar and delivers 1d8 points of fire
damage per caster level.
The glowing bead created by the spell can detonate immediately
if the character desires, or the character can choose to delay
the burst for up to 5 rounds. The character chooses the amount of
delay upon completing the spell, and the delay cannot change once
it has been set (unless someone touches the bead; see below). If
the character chose a delay, the glowing bead sits at its
destination until it detonates. A creature can pick up and hurl
the bead as a thrown weapon (range increment 10 feet). If a
creature handles and moves the bead within 1 round of its
detonation, there is a 25% chance that the bead detonates while
the creature is handling it.