When such characters have good raw stats, as is the case for Hades - Infernal Schemer, then they can be called a bomb in Limited
Youre also on a given plane doing battle, so you could be on Alara at a given moment but then planeswalk to Tarkir, and after that planeswalk to Ravnica, and so on
Ahh good ol' Multiplayer
From a more brute-force perspective, all of the individual Escalate cards are worth considering just as the Investigate cards were, as they require no support to bring their power to the table
These include cards such as Kozilek (card draw, counter), Deepfathom Skulker (card draw, unblockable), Sire of Stagnation (card draw), Oblivion Sower (land fetch), Desolation Twin (creature token), Drowner of Hope (creature tokens, tap), World Breaker (removal), Hideous Taskmaster (steal, annihilator), etc
Most of your stax pieces will be in white regardless of how you build your deck