Last Collide

Diablo II Notation Basic Class Skill Item Ally Quest Area Monster Tale Attribute Unit Animation Attack Damage Death Size Radius Light Radius Melee Range adder Missile Chill Drain Damage regen Prevent Heal Altering AI Blinds Target Monster Flee Shrine Curse Aura Last Collide is a property of missiles which normally prevents those which are not destroyed upon collision from colliding with the same target more than once (since a missile can collide with a target multiple times as it passes through it, or remains over it). Lightning Spire bolts are size 2 and have Last Collide enabled, so although they aren't destroyed on collision they normally only collide with the Sorceress once (as indicated by equipped items applying 100% Chance to Cast Nova When Struck). However, when a Desert Mercenary is close enough adjacent for a bolt to collide with both of them simultaneously, he then becomes its last target and the bolt can collide with her a second time before it is out of range.