yugioh deck 2003 Yu-Gi-Oh! Pegasus Starter (2003) Complete Set Yu-Gi-Oh 2003 Holiday Buster Blader

The asking price is a whopping $100,000

Special Summon it, also you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except Xyz Monsters

When equipped, its essentially a Vizier of the Menagerie effect on an artifact

Likewise, it could be that they have a spell/trap set in their spell/trap zone, so you can place a spell/trap in that same column on your side of the field, and now theres 2 cards in that column, letting you special summon a Mekk-Knight to it On top of being able to get out strong monsters this way multiple times per turn, they have multiple effects, some of which let you move the cards on the field so that you can summon to the same zone (because the columns had 2 or more cards in them) multiple times by letting you move the card you just summoned out of the way and put a new one there