Well, may be. IDK with that accuracy because I don't use it ![Tongue :P](https://elementscommunity.org/forum/Smileys/solosmileys/tongue.gif)
Remember that now it's not as effective as when it started, because of the first SoSa nerf (3 to 2 turns).
I use 200 damage OTK for platinum, because AI doesn't play most of the shields, SoSa and PC so it's hand many times becomes clogged with that stuff, making it slower.
Are you talking about instosis? That doesn't work very well either from my experience. Most decks have too much PC for it to work very well, but your mileage may vary. Plat in it's current form is pretty much useless as far as trying to farm for shards or score goes. You're much better off creaming bronze over and over and over and over and over and over and over and over and over, which is so much fun. (Except for score, since it is STILL bugged so that you can lose score even when you win.) Seriously, I've been playing this game forever now, and I think the whole shard thing is sort of ruining it. Just my opinion of course, but I'd much rather see each element get cards with updates instead of this whole shard thing. You can't really make "original and fun" decks anymore, because there just aren't enough cards for each element for it to be any fun or "viable".
This game is like magic the gathering ultra-ultra-ultra light. There isn't anything left to discover, which is a shame really because the idea is very strong.