You won't get to return a creature card to the battlefield
Abilities that begin with "At the beginning of your end step, if you descended this turn" will trigger only once during your end step, no matter how many times you descended this turn
Being able to stack your deck with any number of Gobbies is surely a major payoff for this creature hitting the battlefield, but any forced shuffle or milling thwarts your plans
With only 1 Strength Mickey Mouse Inspirational Warrior isnt too frightening when it Challenges, however, we can combo him with cards that give + Strength like Merlin Crab, making it easier for you to banish a Character and benefit from his ability
This is massive tempo and value
Spoiler season is one of the most exciting parts of new sets, and Modern Horizons sets are my personal favorite