Because they are weak individually, they form groups. However, they bicker if the group grows too big.
Type
Attributes
Expansion
Number
Rarity
Release
Regulation
Formats
Energy Types
Species
HP
Retreat
Weakness
Resistance
Stage
Evolves From
Artist
Search your deck for up to 2 Basic Energy cards, reveal them, and put them into your hand. Then, shuffle your deck.