Which is stronger rainbow dragon or rainbow dark dragon?

Answer 1

depends on how you put together your deck or who your opponent is. if you have dark types in your deck,graveyard,and field, then i suggest rainbow dark dragon but you will not gain as much attack as rainbow dragon.although rainbow dragon gives you a lot of attack, there is not as much cards available to gain the attack and..... its complicated so ill just get to the point, they are the same if you have a regular deck that is not focused on certain monsters so like i said, depends on how you put your deck together.