Whenever this creature mutates, exile cards from the top of your library until you exile X permanent cards, where X is the number of times this creature has mutated
As such, it embraces randomness and chaos, burying its opponents under the weight of multiple spells and creature-entry effects in a turn
Necropanther can give you a similar, early game mutate trigger, while Boneyard Lurker returns any permanent type, albeit to your hand
Far from opening up the format, Treasure Cruise seems to have made Delver strategies too oppressive
(This is hypothetical, and not my actual opinion.) In this case, I'd also start my draft planning to go for Jeskai Tempo
Even better, if you're playing a blink deck that includes red (like Pramikon, Sky RampartPramikon, Sky Rampart), this thing was made for you