As a boring killjoy D&D rules lawyer, I might point out that this will definitely lead to “them” winning, since you are killed when you attune, and therefore can never deal the 1d8 bludgeoning + 30d12 radiant damage.

Past a certain point death is a formality in d&d, so I don’t think that’s true.

I thought death broke attunement, and you had to reattune after being resurrected?