I think the newer heroes make stacking on raid D much more possible, still not quite better than rainbow at large, but I think if you can combine the right heroes it would be pretty cool. I’m also interested in trying a stack defense once I get more 5* depth.
Tried something very similar. Not great.
Isn’t there also a little mana gain for all heroes on defense each turn regardless of being hit by tiles?
Yes, as the posting says.