Search your deck for a Pokémon that has δ on its card, show it to your opponent, and put it into your hand. Shuffle your deck afterward.
Type
Attributes
Expansion
Number
Rarity
Release
Regulation
Formats
Energy Types
Species
HP
Retreat
Weakness
Resistance
Stage
Evolves From
Artist
Search your deck for a Pokémon that has δ on its card, show it to your opponent, and put it into your hand. Shuffle your deck afterward.