It is different enough and high enough mana cost that it is not a sure thing, but as far as power level goes this is about as high as you can get
Mark Rosewater has an indepth article on the mothership explaining the reasons behind the changes, but the summary is: The Fall, Winter, and Spring Sets will all be large sets that are drafted alone (no more "blocks" or "small sets") The Summer Set will be a revamped Core Set (roughly half reprints, half new cards) A different approach to the Gatewatch (pulling back on apperances as planeswalker cards) The Masterpieces Series will revert to being in fewer sets (none in Ixalan) We're changing things behind the scenes (new R&D group "Play Design")
When the characters and films are so beloved by so many, it only makes sense mega-fans are prepared to shell out for a rare Disney card with unique art of their favorite character
The 0/4 body is solid, too, providing a bit of a roadblock in the early game
Illustrated by Jack Hughes Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp
Raging Battle Mouse was definitely designed to support the celebration mechanic from Wilds of Eldraine , as it reduces the cost of your second spell each turn
