Talk:Atma's Impaler/@comment-8506165-20140115042424/@comment-20434720-20140411023603

Sunfire cape provides 40 magic damage per second that you aren't building penetration for, while Atma's on AD Sion will usually give 40-50 AD. Assuming you auto attack once per second (your base attack speed allows this by the time you would have this item), that's always more than sunfire's damage, except you're also itemizing for penetration that it benefits from. Furthermore, it also gives crit, and given that Sion has a naturally high amount of AD (ravenous hydra and his E alone are enough to put him at 230-250), his crits hit HARD. In the longest game I've played as AD Sion, I reached about 3800 health, and so it gave about 57 AD - given that I also had last whisper for it to benefit from AND additional critical strike chance, the bonus AD did far more for me than a sunfire ever could.

Furthermore, Atma's is cheaper and builds out of a gold generation item, making its *effective* cost even lower.

Atma's is a situational item, yes, but it's far from being worthless/worse than sunfire cape at damage.