I'm purely talking about Standard, where you don't get alternate cost, where getting to "play" a land means you get to put a mana-producing land onto the battlefield in a format without fetchlands, and you can cast any creatures or the like that you can afford after spending the 3 mana on the spell, which means you get back 2 2drops if you are casting this with 7 mana. I'd obviously ban the card in Modern, but as a pure thought exercise, the card doesn't do anything broken in Standard except in the late late game, where it's power level would be on par with other 8+ mana cards, like Emrakul and Ulamog.