FEEBLE Siegfried & Roy superstar Roy Horn is confined to a wheelchair and can no longer stand without help — 15 years after he was horrifically mauled by a white tiger during the magical duo’s live Sin City show! Heart-wrenching photos captured by GLOBE reveal the 73-year-old illusionist is facing the final curtain — and according to one medical expert, ­ravaged Roy could have as few as 12 months to live! The shocking shots were taken during a rare public appearance for Roy and his former stage partner, Siegfried Fischbacher. The pals stepped out last month, just before Siegfried’s 79th birthday, for an event ­honoring their contributions to a Las Vegas brain clinic. Buy GLOBE Magazine today and read the latest celebrity gossip!