While defending a team mate, I watched as the attacking player destroyed all our defences, then right before the fatal destruction of the town centre, swapped out the dragon. Then after a few seconds of flight time, they attacker swapped the second dragon for a third! Then destroyed the town and win.
I can’t understand why this behaviour would be advantages? I witnessed this player four times while trying to defend. Can anyone explain why this strategy of swapping would be helpful?