Clever Concealment [ONC - 5] Duskmourn House of Horror you may sacrifice any number

you may sacrifice any number of creatures

—The Goose Mother and Other Tales

and the world was silent no more

T: Double the amount of each type of unspent mana you have

you may create a token that's a copy of that creature that's tapped and attacking that player or a planeswalker they control

Clever Concealment [ONC - 5] Duskmourn House of Horror you may sacrifice any numberRarity: R #: 5 Creature Type or Sub Type: Instant Rules Text Contains: Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for 1 or one mana of that creature's color.) Any number of target nonland permanents you control phase out. (Treat them and anything attached to them as though they don't exist until your next turn.)