Practice attacking within your clan
So I recently started playing marvel champions and one of my favorite features is a duel option it gives you and it allows you to duel anyone, it gives you five that regenerate over time. This should be an included feature in a future update which would allow us to practice attacking fellow clan mates with say two or three a day and only taking the cost of troops to be made as an expense. This would allow both practice attacking and for us see if our bases hold up against certain types of attacks without risking loss of loot or trophies.