Scut swarm
I had a bug occur just now. I was playing against “Void” who was using a landfall deck with scut swarms. I had two soul wardens in the field. We got to the point that he was getting hundreds of tokens made but they were not coming into the battlefield so I was not getting the life for them (my strategy needed that life, I was playing a life cycle deck- I gain life they lose it and when they lose it I gain it). At one point he was supposed to get 800+ tokens and me 1,600 life. Not only did I not get my life (so the guy ended up killing me) but the app kicked me out three or four times
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DAC169#34537 commented
Arena has a limit on how many tokens each player can have at a time.