Bigby's Besieging Bolt

This spell is similar to magic missile. When the spell is cast, the wizard is able to fire one magical siege bolt for every two levels of the caster. The bolt will behave as a given siege engine missile in range and effect. The type of siege missile the bolt mimics depends on the caster's level.

The bolts must be launched at the rate of one every two rounds in succeeding rounds. During this time the caster can do nothing else. If the spell is interrupted, no additional bolts can be launched. The bolts strike their target unerringly.

Wizard's Siege Engine Level | Missile ------+---------------- 12th | catapult, light 14th | catapult, heavy 16th | trebuchet

The material component is a small stone sprinkled with diamond dust.

Notes: Uncommon or rare (WoG).