In THIS deck, its essentially extra offspring, and feeds a number of other effects in the deck
Contents: 12 Universes Beyond: Doctor Who MTG Collector Boosters
But somewhere, a miscomunication ended up with the artist drawing a 'hyalopterous lemur ', a cute little mammal, with butterfly wings
The saw-tooth indentation in the bottom of the card above comes from a packaging error that occur when the card somehow gets displaced in the booster before it is sealed, and the card gets heat sealed along with the booster plastic
(So much so that now most of the cheap acceleration we make costs at least two mana.) You can start powering out your threats quicker than your opponent, putting you at a sizable advantage
When reflecting light, you see the colors of the rainbow staring back at you around the full border of the card