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 - $0.20
Near Mint Non-English - $0.20
Lightly Played - $0.20
Lightly Played Non-English - $0.20
Played - $0.10
Played Non-English - $0.10
Heavily Played - $0.10
Heavily Played Non-English - $0.10
Damaged - $0.10
Damaged Non-English - $0.10