Angela for Alliance Coliseum?
I haven't used Angela against an Arcade in so long so I may be completely forgetting specific champion interactions making her a bad counter, but is there a reason her sig level 200 awakened ability doesn't work against Arcade's debuffs or auto-block while she's at 3+ buffs?
Is this a coliseum-specific interaction? Thought I'd give her a go based on today's tag bonuses but didn't go as well as planned lol.