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Soo as the title says, I built a new brawl deck yesterday with Esika as a Commander and Obosh the prey piercer as a companion. Honestly, I just built it for fun and didn't even know if it would work. After I finished, I was eager to try it out but no matter how many times I tried or how long I waited, Arena just loaded and did not stop. Anybody maybe got an idea whats wrong? Maybe I overlooked something, I'm relatively new to playing Magic, so sorry if this is a stupid question

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Originally posted by TheRealNequam

Thats because Brawl doesnt have sideboards and as such no slot for companions

Brawl does allow the use of one sideboard slot specifically for a companion - usually, anyway. We know about this bug, and we're working on a fix.