I dunno man, most of the time is a shaky claim without seeing the rest of the cards.
Despite this better judgement, I can actually totally see this frequently being a bad minion.
Think of it like this. Edgelord is clearly above the power curve. But you would expect most of the cards to be, by definition, on the curve. The rarity rule presented makes it so that Scissors can OTK, if you draw both of these legendary 1 in 90 cards, and have a board with “opponent” written in one of the cards.
But realistically, most of the time you will be drawing half shitty commons and rares? With an occasional epic. The epic presented (2 in 90) can be exploited to give you minions every turn, and that may snowball if you are the one controlling it (an opponent will just give you bad minions), and none of your (presumably) multiple opponents have an answer for a 3/4.
But if you dont have these rare powerhouses, what do you even do?
Kill a friendly minion to do something like turn a 6/6 Rogue Knight into a 6/1, and then presumably you tank the 6/1 with another minion of yours, if you have it, trading 2 for 1. You’d be better off just paying Rogue’s ability. Or maybe you kill a minion to turn it into a 1/6, which is okay, but does not seem broken.
Basically, Id expect this to make for very cool effects sometimes, but frequently, you just save it for the entire game, or cast it as a panic button not-very-good control card.
…There is still a possibility it’d be totes bonkers, in which I’d suggest increasing the cost, since making the opponent choose would just make them pick some boring ass number change every time and kill the fun
