Number C1000: Numeronius

Cannot be destroyed by battle except with "Number" monsters. Negate the effects of all "C" monsters your opponent controls, also they cannot attack. At the end of the Battle Phase: Destroy all monsters your opponent controls, then Special Summon from either Graveyard, as many monsters as possible that were sent from the field to the Graveyard(s) this turn, to your side of the field in face-up Defense Position. If this card would be destroyed, you can destroy 1 other monster you control instead. Once per turn, during either player's turn: You can detach 1 Xyz Material from this card, then target 1 monster on the field; destroy that target, then choose 1 "C" monster in the Extra Deck of the destroyed monster's controller and Special Summon it to their side of the field, ignoring its Summoning conditions.