Cursed Ring of Attunement (5e Equipment)
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Ring, Very Rare (Major) (Requires attunement)
This ring appears to be an ordinary Ring of Attunement and behaves as such. When attuned to by a level 20 Artificer or when the person attuned to it reaches the 20th level in Artificer, the curse activates. The user gains a -1 penalty on all saving throws. The ring can be removed, but this does not end attunement. It can only be ended by Remove Curse or a similar spell. The ring still grants an extra attunement as a normal Ring of Attunement, and it no longer qualifies as one for the purposes of game effects of the same name not stacking.