This means you are not bound to find one, but if you have, you must reveal it
These decks utilise cheap spells - or in Lorcanas case, actions - that replace themselves with card draw to get value out of cards that incentivise you to be playing multiple cards per turn
Like some sort of fuzzy Pied Piper, Bello can help you quickly amass a board state out of nowhere, swing through for tonnes of damage, and draw more cards than your paws can hold
Of course, we wouldnt want every match to come down to such heavy-handed variance, but were talking about a planeswalker ultimate (making it already somewhat rare), and flipping to see just how many extra turns you are going to take is a bit different than flipping one coin to see if your removal spell did anything
There is rarely a bad time to draw this card
No matter what format of Magic The Gathering you play, you'll probably be eyeing up at least one piece of equipment