I mentioned on 2-3 occasions in the op that the opponent needs to be damaged for it to work, though I didnt specify that it gains the exact amount it actually heals. The wording being inconsistent with existing cards is a concern and obviously I didn't make it clear enough in the OP either when multiple ppl had to ask.
@Ides thematically it makes at least as much sense in
, but would skew the balance in a way that the catapult synergy is more desirable than anything else you could do with the card (it would basically be a much better in-element voddoodoll, making armaggio very sad and its timebomb-usage and antimatter would be mostly ignored (chimera antimatter may still happen))