Maw of Eternities

(Maw of Eternities is all colors.)
Delve Wastes from Exile (Each face up waste card you shuffle into your library from exile while casting this spell pays for {1}.)
Rift - Whenever you cast a spell if Maw of Eternities is in the command zone, exile the top 3 cards of your library.

Reach, trample, ward - sacrifice two permanents.
You can play Wastes and nonlegendary Eldrazi spells from exile. If another Eldrazi card would be put into exile from anywhere instead shuffle