الفارس الذهبي سيد التوأم

This card is treated as a Normal Monster while face-up on the field or in the GY. While this card is a Normal Monster on the field, you can Normal Summon it to have it become an Effect Monster with these effects.
● If this card is Normal or Special Summoned: You can add 1 Spell/Trap from your Deck to your hand that has "Gemini monster" in its text. You can only use this effect of "Geminize Lord Golknight" once per turn.
● This card becomes a Machine monster, also it gains 500 ATK.