Be'Bo, Trinket Hoarder

Haste
Trinket Diving - {w}{u}{b}{r}{g}{t}: Choose target
player and permanent type. That player shuffles
their library then reveals cards from the top until
they reveal a card with the permanent type
named. You may cast that spell without paying
its mana cost. If you don't, create a colorless
artifact named Ball Bearing that has "{t} add one
mana of any color"