This card can be used to Ritual Summon any Nekroz Ritual Monster. Tribute monsters from your hand or field, and or banish Nekroz monsters from your Graveyard, then Ritual Summon 1 Nekroz Ritual Monster from your hand whose Level exactly equals the total Levels of those monsters. You can only use this effect of Nekroz Mirror once per turn. If you control no monsters: You can banish this card and 1 Nekroz monster from your Graveyard; add 1 Nekroz Spell Card from your Deck to your hand.