Combos Utilizing Recurring-Nightmare

Tap Tidal Warrior to turn opponent's land into an island. Use Seasinger to take control of opponent's creature. Sacrifice that creature to put a creature in your graveyard into play.

Have both cards in play. use survival to get a big big creature in your hand. use it again and discard the big creature.use recurring nightmare to get the creature into play with no casting cost.

sac a creature to get a creature...watch your oppenents' die

a lots of mana

Play the Bone Shredder, destroy a creature. Sacrifice the shredder and return nightmare to you hand. The put shredder back in play and destroy a creature (again). Then repeat this. Very nasty.

play neckratal then use reacurring nightmare, sacrafice neckratal to bringsac in the neckratal you are dead. boom!!

one cathodion in graveyard, another in play. sac one to put other into play. use 3 mana to cast nightmare. infinite loop. cast hunting pack to put infinite 4/4 beast tokens into play

one cathodion in graveyard, another in play. sac one to put other into play. use 3 mana to cast nightmare. infinite loop. cast graves to return all creatures from graveyard to your hand

play recurring nightmare and sac a creature to bring in your symbiotic beast from the graveyard, sac the beast to the altar for mana and you have four mana to do the process over leaving one left over, keep repeating and you have infinite mana

have recurring nightmare in play. attack with dark maze. before the end of your turn, sac dark maze to return a creature card in your graveyard into play