You can Ritual Summon this card with "Reindsurm Conquest". If this card is Ritual Summoned: You can send 2 "Reindsurm" cards from your Deck to the GY. If this card is sent to the GY, except by battle (except during the Damage Step): You can Ritual Summon 1 Insect Ritual Monster from your hand, by Tributing monsters from your hand or field, and/or shuffling Insect and/or Dragon monsters from your GY into the Deck, whose total Levels equal or exceed its Level. You can only use each effect of "Reindsurm Carcasas" once per turn.