Decks such asZoodiac Tri-Brigaderely heavily on summoning powerful XYZ monsters for win.
What is an XYZ Monster in Yu-Gi-Oh Master Duel?
An XYZ Monster is a monster card with the XYZ tag.

This means that you wont put them into your Main Deck or draw them during your Draw Phase.
Some cards, such asMadolche Queen Tiaramisu, are more specific, requiring 2 Level 4 Madolche monsters.
Similarly, some XYZ monsters can be summoned by overlaying them on top of other XYZ monsters.
