Swimmer in Nightmares

Creature — Nightmare Merfolk

Produces: nothing.

Cares about: a card in a graveyard.

Partners

275 cards can cause a Merfolk it boosts.

1. Vodalian Hexcatcher — Vodalian Hexcatcher gives Swimmer in Nightmares bigger stats
2. Attuma, Atlantean Warlord — Attuma, Atlantean Warlord gives Swimmer in Nightmares bigger stats
3. Mist Dancer — Mist Dancer gives Swimmer in Nightmares bigger stats
4. Lord of Atlantis — Lord of Atlantis gives Swimmer in Nightmares bigger stats

275 cards can cause a Merfolk it grants abilities to.

1. Namor, Scourge of the Seas — Namor, Scourge of the Seas gives Swimmer in Nightmares an extra ability

278 cards can cause a Merfolk creature it boosts.

1. Merrow Reejerey — Merrow Reejerey gives Swimmer in Nightmares bigger stats
2. Coralhelm Commander — Coralhelm Commander gives Swimmer in Nightmares bigger stats
3. Master of the Pearl Trident — Master of the Pearl Trident gives Swimmer in Nightmares bigger stats
4. Merfolk Sovereign — Merfolk Sovereign gives Swimmer in Nightmares bigger stats

1,206 cards can cause a Merfolk creature or artifact or enchantment or planeswalker or instant or sorcery or battle it makes cheaper to cast.

1. Stonybrook Banneret — Stonybrook Banneret reduces what Swimmer in Nightmares costs

6,862 cards can cause a card in a graveyard.

1. Heart-Shaped Herb — Heart-Shaped Herb fills a graveyard toward the 10 or more cards Swimmer in Nightmares needs
2. Victimize — Victimize fills a graveyard toward the 10 or more cards Swimmer in Nightmares needs
3. Come Back Wrong — Come Back Wrong fills a graveyard toward the 10 or more cards Swimmer in Nightmares needs
4. Bound // Determined — Bound // Determined fills a graveyard toward the 10 or more cards Swimmer in Nightmares needs
5. Boneshard Slasher — Boneshard Slasher fills a graveyard toward the 10 or more cards Swimmer in Nightmares needs
6. Wayward Angel — Wayward Angel fills a graveyard toward the 10 or more cards Swimmer in Nightmares needs
7. Shattergang Brothers — Shattergang Brothers fills a graveyard toward the 10 or more cards Swimmer in Nightmares needs
8. Ruthless Technomancer — Ruthless Technomancer fills a graveyard toward the 10 or more cards Swimmer in Nightmares needs

6,854 other cards ask for it too, equally specific. The ones shown are the best connected.