Just lost a match to this bug where I should’ve been guaranteed a win and lost a heavy amount of MMR.
Using Chess set, I set Mrrglr to be duplicated. I had a Loc Prince in hand with 200 in atk and hp. I had a diremuck on field to summon the Loc Prince to field. Combat starts. Chess set goes off, but Mrrglr gains zero stats and Diremuck doesn’t summon Loc Prince and without my heavy hitters on board I died instantly. Previous turns gone by, everything worked fine when I had Mercules being duplicated. Only when I tried duplicating Choral Mrrglr did everything go wrong.
[indent preformatted text by 4 spaces](https://imgur.com/a/Ir5So6R)