Asymmetaphys

Once per turn: You can banish 1 "Metaphys" card from your hand, and if you do, draw 1 card. Once per turn, if your "Metaphys" card in its owner's possession is banished: Apply this effect depending on whose turn it is.
●Your turn: All monsters on the field lose 500 ATK/DEF, except "Metaphys" monsters.
●Opponent's turn: Change the battle positions of all monsters on the field, except "Metaphys" monsters.