If you have a "The Phantom Knights" monster in your field or GY, you can activate this card the turn it was Set. Special Summon this card in Defense Position as a Normal Monster (Warrior/DARK/Level 3/ATK 0/DEF 300) (this card is NOT treated as a Trap), then you can change 1 Attack Position monster your opponent controls to Defense Position. You can banish this card from your GY; immediately after this effect resolves, Xyz Summon 1 DARK Xyz Monster. You can only use each effect of "The Phantom Knights of Umbrage Veil" once per turn.