User blog comment:ChickenRave/Sinne, the Mourning Father/@comment-25280175-20150126210751/@comment-26030737-20150126230339

You missed something: champions can't just line up deaths at this time, the respawn delays are too high. And you're feeding the enemy team too, you're also still vulnerable to AP champions. And the effect will last for 3.8 seconds with 1000AP, 4 dead allies and you can't be hurt for 15.2 seconds (you are only immune to physical damage, not stuns and other crowd control). You say Sinne can just use Ghost Aspect to avoid projectiles, however AoE spells like Veigar's still hit him (quite hard). In teamfights, Ghost Aspect will probably pass through its target but hit another one, however Cleanse Evil can basically disable all their buffs because this situation is quite compact. But honestly I find this spell quite useless for an ult. Sinne's gameplay is very affected by cooldowns, and his only way to reduce them quickly is to let an ally die, meaning one less ally to help you during fights but also fed enemies. And fed enemies can get dangerous items with dangerous actives.

My first version of Despair from Death had another name and made him able to revive an ally after a long channel so you don't use it during teamfights, which was even more OP and didn't match his lore (because he could have just revived them and everything is back to normal), and honestly I was out of ideas when I came up with the current one which I've taken from his experience with death (read his lore). I'll try to find something else, or just come up with another idea. For now I'll make the minute factor divided by 2 so 40 minute games only take 20 seconds from the cooldown.