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Hot take: Strongest creatures in the setting shouldn't just be clowned by PCs with no resistance.
(ttrpg.network)
Inspired by frustrating conversation I had. For those curious, that was the statblock of Caine, father of the vampires.
Before my group got bored with D&D and we decided to give it a break and switch to Mage, it got to a level I was prepping to have the this level 13 party fight Vecna and Zariel at once, just to make it at least a little hard.