Tellchevalier Ptolemaeus CROS-FR050

Min. 2 Level 4 monsters Once per Chain, during each player's turn, you can detach 3 Xyz Materials from this card, Special Summon 1 Xyz Monster ("Number" monsters excluded) that has 1 Rank higher than this card from your Extra Deck, using this face-up card you control as the Xyz Material. (This is treated as an Xyz Summon. The Xyz Materials attached to this card also become Xyz Materials of the Summoned monster.) You can detach 7 Xyz Materials from this card, skip your opponent's next turn. During each player's End Phase, you can attach 1 "Stellarknight" card from your Extra Deck to this card as a face-up Xyz Material.