Talk:Trinity Force/@comment-99.139.127.198-20101208013423

Hello, I do not understand the item description that well. For the Unique Passive, it says "on cast, increases your base Attack Damage by 150% for one attack." Does this mean when I activate a skill/ability? Since it is under Unique Passive, it can't be a activating item effect Second, it seems to relate back to Sheen, which activates the effect after using a skill/ability.

Also, what is "proc"? I hear the term on both Sheen and Trinity Force. Clarification would be great, thanks!