Vaguely inspired by Break the Seal.

Neat! Temporarily putting something is interesting and I would love to see something like this printed.

Thanks. I gave it a lower CMC than most Oblivion Ring variants because it's generally easier to get things from your graveyard without destroying this than it is to retrieve them from exile. Realistically, it would probably cost , though.

Seals have traditionally been Enchantments with Sacrifice effects. Not sure if you care, though.

That's true. I do like keeping with tradition, but it's mostly a throwaway name.

I was rooting for "zombie seal". MTG needs more mammalian sea creatures :)