Yikes! Yes, there's no way a land should be able to return a creature every turn - it's crazy powerful and way too uninteractive. (Erm, I guess there is Emeria, the Sky Ruin. Which was also crazy powerful and way too uninteractive.) Let alone getting back instants or sorceries... this gives every card of yours buyback , which seems crazy. (And also reminiscent of that silly new mythic, Soulfire Grand Master.)
I think what I'm saying is, you could keep either one or the other of those abilities, and make this mythic, and that'd still be a good card.
Ok, how about instead I can mill, and "whoops I didn't want to mill that guy.." - so I can bring him back to my hand?
Yikes! Yes, there's no way a land should be able to return a creature every turn - it's crazy powerful and way too uninteractive. (Erm, I guess there is Emeria, the Sky Ruin. Which was also crazy powerful and way too uninteractive.) Let alone getting back instants or sorceries... this gives every card of yours buyback

, which seems crazy. (And also reminiscent of that silly new mythic, Soulfire Grand Master.)
I think what I'm saying is, you could keep either one or the other of those abilities, and make this mythic, and that'd still be a good card.
Wow! Both of those abilities are incredibly powerful, and probably undercosted.
See Lancre Falconer.