Hype. This is simply awesome. I would really love to see this in game. And yeah, make it a 30 day reward (only). Wouldn't break the game if it is really rare or you have to play 30 days for it. More people would buy DM eggs (at least one or two 3k pulls) and it would be a long term motivation for most players. Support.
Edit: Or add it to the epic wheel XD