Seriously what the absolute hell. Why does a timed seal have RNG in it!! I have been sitting for literally six hours trying to get the Overlord to spawn at the hellmouth. It just won't! I am literally not going to be getting the title because of this absolute crap. I have spent so long grinding this whole thing out only to have it locked away forever by bad luck. This is such bs. There should never EVER be RNG in any part of a timed thing. This is literally the worst thing ever!
Getting the overlord to spawn isn't RNG, you had to kill every hydra before killing the Gate Lord during each warp gate phase. After killing the hydras then kill the gate lord, do this a couple times and it'll spawn like a heroic public event. Stop complaining, just watch Aztecross