Swimmer in Nightmares gets +3/+0 as long as there are ten or more cards in a single graveyard.
Swimmer in Nightmares can't be blocked as long as you control an Ashiok planeswalker.
Ashiok's minions plumb the depths of the ocean and the psyche.
Near Mint - $0.50
Near Mint Non-English - $0.50
Lightly Played - $0.47
Lightly Played Non-English - $0.47
Moderately Played - $0.40
Moderately Played Non-English - $0.40
Heavily Played - $0.30
Heavily Played Non-English - $0.30
Damaged - $0.25
Damaged Non-English - $0.25