Holon Researcher (Reverse Holofoil)

Rules

You can play only one Supporter card each turn. When you play this card, put it next to your Active Pokémon. When your turn ends, discard this card. Discard a card from your hand. If you can't discard a card from your hand, you can't play this card. Search your deck for a Metal Energy card or a Basic Pokémon (or Evolution card) that has δ on its card, show it to your opponent, and put it into your hand. Shuffle your deck afterward.