Nu-Metal, Sea of Life (JRP-097 N) [Judgment of the Rogue Planet]

As long as you control exactly one J/resonator, that J/resonator gains [Barrier]. [Enter] Discard up to two Metal Lifeforms, then draw that many cards. 0: Choose one. Play this ability only once per turn; - Remove a Metal Lifeform card in your graveyard from the game. If you do, produce R or U. Spend this will only to play Metal Lifeforms. - Choose a card with total cost 1 and [Fusion] (Metal Lifeform) in your removed area. It becomes an addition, then put it into the field as an addition added to a Metal Lifeform J/resonator you control.