When you play karthus and you see someone at low health...

Only to have it canceled because you pressed R where the enemy could stop you.

https://i.imgur.com/pNabftr.jpg

But then or

Then hits W, R, or both.

just flash karthus r lol

When your almost done with your recall then a karthus Ult comes from across the map [zombie-brand-facepalm]