Talk:Siege Commander (Season 2012 Mastery)/@comment-1665540-20111122062005/@comment-1618239-20111127174150

Assuming you don't have someone on your team that can do magic damage to towers (ie. Rammus), and assuming you're always present whenever your tower is sieged, it will reduce the tower's effective hit points by 10% of its flat hit points. So, looking at your basic AD, you'll need to do about 155 points less from applications of that to an outer tower. It's probably actually really good on Rammus, even though it doesn't help with Tremors - it stacks with his well-known ability to take down a tower faster than any other jungle tank, after a successful gank - and he can apply it to every lane, at least in part.