R.B. Funk Dock DUAD (Super Rare)

When this card is activated: Add 1 "R.B." card from your Deck to your hand, except "R.B. Funk Dock". Each time a monster(s) your opponent controls is destroyed by battle or card effect, gain 500 LP. If a face-up "R.B." monster(s) you control leaves the field by card effect (except during the Damage Step): You can Special Summon 1 "R.B." monster from your Deck. You can only use this effect of "R.B. Funk Dock" once per turn. You can only activate 1 "R.B. Funk Dock" per turn.