This monster can only be Ritual Summoned with the Ritual Spell Card, "Turtle Oath". You must also Tribute monsters whose total Level Stars equal 8 or more from the field or your hand.
Near Mint Unlimited - $0.25
Lightly Played Unlimited - $0.21
Moderately Played Unlimited - $0.17
Heavily Played Unlimited - $0.15
Damaged Unlimited - $0.13