I am surprised that Polterghast isn't a sentinel of the dungeon along with the Ceaseless Void. Since you do need one of his drops in addition to the other sentinels of the Devourer to summon the Devourer. Then again, I don't even know what in the heck it's backstory is. Looks like a reincarnated Plantera....
Maybe it is Calamitas or Yharim trying to prevent the player from getting any stronger, by reviving something the player already killed, and thus, knows their strengths and weaknesses already. Heck, the Ravager is released on the world when the Golem is defeated, and is basically an upgraded Golem. Looking back, the only bosses from vanilla that aren't repeated are the WoF, the ML, and Skeletron/prime... Maybe the Polterghast is a teaser of more bosses yet to come...
You are. With rage and Adrenalin, they don't have a constant effect like they used to. Instead they are charge meters, and can be tapped into for a boost when enough has built up. Also, rage only increases with damage taken, not constantly unless you equip the Draedon's Heart(or it's appropriate ingredient whose name I can't recall). And Adrenalin is only available during boss fights. It resets at the beginning and at the end of boss fights, and only increases if a boss is alive and (i think) nearby. I prefer the old formula myself, only for those panic-inducing moments when stress levels would trigger a ten second Zerg potion effect. That moment during a Solar Eclipse, post Yharon, and the monsters are POURING onto the screen from all sides. "...Well, f---". *head gets torn off by rabid Mothron, one of several on screen*
Now it's like we went from being terrified of the dangers, to being masochistic about the situation. And this would be easy to take advantage of, using a spike and some post-ML armor. Refilling rage by taking damage, activating invincibility frames, and auto-healing the damage before it even matters. Literally a life-hack. That shouldn't be the case, even if that means that every time we attempt storing this power we have a decent chance of being rushed by enemies, Zerg style. Revengeance mode shouldn't be EASIER than expert mode, not even for one millisecond. You are out for revenge. You're going to have a hard time. This is Yharim we're talking about here. And Supreme Calamitas. And Yharon. And The Devourer of Gods. And Providence, the God(dess) of the Profaned Flame. And revengeance mode is now stressless? I don't see how that is ok. It's basically opening the door to become worse than Yharim. Seriously, if an alicorn mount is a revengeance mount, you can't have that be easy in any way. Bring back the stress. I didn't download this mod to be coddled. I downloaded it because Terraria on it's own is too easy! I want a challenge! I-- oh wow. Wait a minute.
I... I am a masochist... Huh....Although, seriously, the stress mechanic was awesome, and kept you from just setting out on an epic massacre against everything that moved, and helped you manage your resources + make appropriate arenas for fights, and made us want to cry/die/ragequit. That last one is kind of what made this mod so popular, just being generally UNFAIR. To EVERYONE.
ing. 
