Equip this card to a Gemini monster you control as an Equip Card. It gains 700 ATK. When this card is destroyed while equipped and sent to the Graveyard, select 1 face-up Gemini monster and treat it as an Effect Monster.
Since it provides a high attack increase as an equip card. Any high attack gemini monster will become much more powerful, or a Goggle Golem with 1500 attack will be 2200, once normal summoned again it will be 2800.