1. Mirror return doesn't stack. You can only reflect once even if you put Fire Main, Kurenai and Ningendo on the same team.

2. With Auto-Barriers, the team with the highest overall initiative will have their barrier up. If your Danzo's barrier casts his barrier first then you have lower overall initiative than your opponent.

3. Those hard mode group summons are not available yet. Wait for future patches.

4. Shields will stack.