pokemon binder full of rare cards Unbelievable Rainbow for Pokémon Original Pokemon Cards - Binder

(When this Equipment enters the battlefield, create a 2/2 red Rebel creature token, then attach this to it.) Equipped creature gets +2/+2 and has flying and haste

These gave out Secret Rares of the monsters Guardian Angel Joan and Palladium Oracle Mahad respectively

Your opponent also gets to take advantage of this effect, but only if they have a character to send out

Courtesy of Wizards of the Coast, Magic: The Gathering fans caught a fresh glimpse of Jumpstart 2022 on October 20

I wonder if there's a way to put 40 of them on at once

It's not very versatile, but it's definitely an effect that gives you an advantage, so it's strong when used with a strong deck