So this is pretty much a suggestion for these bunnies of future heros who could make for an interesting tactic…
Master Lepus, imo, lacks anything great about him. Yes his attack is very powerful, but the -20defense is likely the reason I don’t see too many using him.
My suggestion is, during the 3 turns that his defense is at -20, it would be intriguing if he also had “invincible vs Green tile and special attacks for 3 turns and cannot be dispelled”.
This could make him a strategic hero against titans. Maybe need to lower his attack strenght, but he would be used more I think…
Just my humble opinion.
Gann