Flying is better than the life and an actual body is probably better than a token producing spell in black
I think it makes more sense in his deck with more one-ofs
Let It Go is a very playable card and yet it has only ever had one artwork printed outside this stunning promo version
Suddenly you have seven goblins in play on turn 3, and a Muxus thatll swing in as a 12/12 before your opponent knows whats hit them
Then the next opponent in turn order (or, if it's an opponent's turn, the opponent whose turn it is) chooses two cards in hand without revealing them, then each other opponent in turn order does the same
The default best choice is usually their Cranial Plating, their Ensnaring Bridge, their Collected Company, or so on