This card is used to Ritual Summon Knight of Armor Dragon . You must also Tribute monsters from your hand or field whose total Levels equal 4 or more. During your Main Phase, except the turn this card was sent to the GY: You can banish monsters from your hand or face-up field whose total Levels equal 4 or more; banish this card from your GY, and if you do, Special Summon 1 Knight of Armor Dragon from your GY. You can only use this effect of Armor Dragon Ritual once per turn.