RTF is a global modification that replaces all towns in the game.

I was thinking of making the third one purple. And giving it an ability like the Alt Riders on lizards. Something like an initial magic strike on all nearby creatures.

Added 7 minutes later
But I haven't really come up with anything yet. And I haven't given anyone abilities or characteristics yet.

Will it work? (it doesn't walk, it flies)

Added 9 minutes later
Maybe immunity to magic, and add an aura of vulnerability to the elements, like the elemental gargoyles (that is, they themselves are resistant to magic, but due to the four auras of vulnerability, the hero's magic will be more effective), or a spell attack and the energy channel skill like the archmage.