If your opponent has no cards, you wait until they do
However, there are some amazing going second cards in the game that help players break through the opponent's board, and one of them is among the best Aqua monsters ever printed, as Gameciel, the Sea Turtle Kaiju has been an incredible card for years
Kabazauls was originally "Kabasaurus", where Kaba means hippo in Japanese
If this card is detached from an Xyz Monster to activate that monster's effect: You can take 1 "Galaxy-Eyes Photon Dragon" from your hand or Deck, and either Special Summon it, or attach it to an Xyz Monster you control as material, then if you activated this effect during the Battle Phase, double the ATK of all "Number" Xyz Monsters you control
Even with the super rare variant, the red background really helps the card pop out
revival cards without mentioning Monster Reborn