Those are references to the two standard group sizes for FF XIV s multiplayer content: Light Parties, groups of four for standard dungeon content
This awakens Ray, who appears in the Pendulum Dimension and is revived as Zuzu, with her and Yuya's counterparts existing inside them as part of them
Dragon Decks have also won many official events, including the iconic "Blue-Eyes" Archetype that won the World Championship in 2016, the largest event in Yu-Gi-Oh
One symbol means one Energy is needed while two means that two Energies are needed and so on
Im also not including any Jumpstart cards in this list
While this Kami is strong, I find it hard to believe casual players really enjoy this card, as it can easily lead to feelbad moments