When this card is Normal Summoned: You can banish 1 monster from your hand; banish 1 monster from your Deck with the same Type as that monster. If this card is destroyed by battle, or if this card in its owner’s possession is destroyed by an opponent’s card effect: You can target 1 of your banished monsters; add it to your hand. You can only use each effect of "Aloof Lupine" once per turn.
Searches monsters by banishing them from your deck.
Retrieves banished monsters.
Not many decks benefit from banishing their own cards.
Retrieval effect can be slow.
Metaphys Decks' strategy revolves around the banish zone. They Special Summoning their banished monsters, and also activate the monsters' effects while in the banish zone. Because of this Aloof Lupine fits well in this deck by being a search engine and also loading your banish zone.
You can banish Metaphys Nephthys from your deck, which can then be returned to the deck to search out any Metaphys card. Banish Metaphys Tyrant Dragon and use his effect to Special Summon a Metaphys monster and trigger the Special Summoned Metaphys monster's powerful primary effect.