Other Mice you control get +1/+1. When Mabel enters, create Cragflame, a legendary colorless Equipment artifact token with "Equipped creature gets +1/+1 and has vigilance, trample, and haste" and equip {2}.

Celebration — This creature gets +0/+2 as long as two or more nonland permanents entered the battlefield under your control this turn.

({T}: Add {W}.)