I have no problem whatsoever with Nymphs being available to AI3.
AI3s are meant to be Elders. They've probably been around for a while. One lucky oracle spin happens.
They should be in AI3 Decks.
They should not be in the spins. That brings them down to rare weapon status. (1 in a deck will be won by playing AI3). We will have unbalance in the nymphs then.