(Xyz Materials attached to that monster also become Xyz Materials on this card) Cannot be destroyed by battle once while face-up on the field
Unlike Yugi and Yuma's monsters, which represented their own individual strength, Yusaku's seems to represent his bond with Ai (hinted in the summoning chant)
In a tournament, shuffling has rules
Both card types feature beautiful full-card artwork, but SIRs have a distinct textured, embossed feel that you can notice when you touch them
cough Blightsteel Colossus cough Fusion Elemental is cool and you can cast him without NEEDing Jodah on the field, but same argument as the Brontodon, just boring
managed to bottle up over two decades ago with the aim of giving that to an entirely new generation of players