Uncle Mike the Squirrel Rider

When Uncle Mike the Squirrel Rider enters the battlefield Celebrate 1- (Put a 1/1 green blue Legendary creature token named "Axel's cousin"
onto the battlefield.)
Whenever a Token named "Axel's cousin" enters the battlefield put a +1/+1 on Uncle Mike the Squirrel Rider.

"Family isn't just who you protect—it's who
makes you stronger." - a Squirrel Shaman probably