Learn the exact range of the AoE on Lay Waste - knowing if you can get the single target damage helps a lot with last hitting and bullying in lane.
Originally Posted by Lazy8s
So when I die, do I immediately pop ult? I have been spamming Q. Or is it situational?
A bit of both. If you want to get a Requiem off, you have to have at least the 3 seconds needed for the channel left in Death Defied (it will lock you out otherwise), but you can usually get ~3 Qs off first. You don't want to be just mindlessly mashing R every time you die, though. Only use it if it will actually help. (And try to avoid random KSs with it. If you don't need to ult to secure the kill, don't.)