Talk:Kassadin/@comment-4948122-20120713190957/@comment-88.186.19.90-20120714203008

It's a rebalance. Basically the stack damage is reduced, but you win a brand new ratio on it that clearly makes up for what you lost. It buffs your lategame and encourages you to build AP. It doesn't really impact early-mid game that much because you never really rift onto someone unless it's to finish them off. Lategame you'll deal significantly more damage with it, allowing to insta-burst squishies if need be.

You need 134 AP for the new riftwalk to deal more damage than the old one on the first cast.You need 266 AP for the new riftwalk to surpass the old one on the second cast and 400 for third cast. However, the cutoff for cumulative damage from the 1st, 2nd and 3rd riftwalks on a same target is around 300 AP. So once you reach around 250 AP, you will deal more damage with the new riftwalk than with the old one.