Sun and Moon

Eraser of the Glorious Sun, Etain
*11 Fairy/Fusion/Effect Dark 3000/3000
1 Tuner Monster with 1000 or lower ATK + 1 Continuous Spell Card + 2 Banished Fairy-type monsters
This card can only be fusion summoned by sending the above cards in your possession to the graveyard. When this card is summoned, send all other face-up cards on the field to the graveyard. You cannot conduct your battle phase this turn.

Eraser of the Crescent Moon, Selardi
*11 Fiend/Synchro/Effect Light 3000/3000
1 Spell Card that can fusion summon a monster + 1 Continuous Trap Card + 2 Fiend-type monsters in your graveyard.
This card can only be fusion summoned by banishing the above cards in your possesion. When this card is summoned, each player randomly discards a card from their hand equal to the number of face-up cards on their side of the field.

Interesting and fun cards. Etain is arguably easier to get out because of Space Clash Wave, and returning to the graveyard is always good, but they're both useful.

So cards that state "Fusion Material Monsters" don't work with the Continuous Spell Card you use?

should still work, as the cont.spell has been errata'd so that it specifically add the one used for the fusion summon, NOT any one that can be used for the summon. still need to define which one should use Prisma's ruling, and which one should use the Super Poly ruling.