The Undertaker is considered the greatest WrestleMania performer in WWE history. The living legend recently shared his dream opponent for the event that never came to fruition. Stone Cold Steve Austin is the name in question.The Deadman holds the record for most matches in WrestleMania history with 27. He has an outstanding record of 25-2, which included an unbelievable 21-match win streak on The Grandest Stage of Them All.Some of the names he has faced at WrestleMania include Jimmy Snuka, Jake Roberts, King Kong Bundy, Diesel, Sycho Sid, Kane, Triple H, Ric Flair, Randy Orton, Mark Henry, Batista, Edge, Shawn Michaels, CM Punk, Brock Lesnar, Shane McMahon, Roman Reigns, John Cena, and AJ Styles.Speaking at the Fanatics Meet and Greet during Survivor Series: WarGames weekend, Reynol Reviews asked The Undertaker about his dream match at WrestleMania that never happened. His choice was a six-time WWE Champion and certified legend."Probably, Stone Cold," The Phenom said. View this post on Instagram Instagram PostThe Undertaker and Stone Cold Steve Austin crossed paths at the height of their careers. However, they never had a match at WrestleMania. Austin did face The Rock three times, as well as Shawn Michaels, Scott Hall, and Bret Hart.The Undertaker underwent heart procedure after WrestleMania 41During WrestleMania 41 weekend, The Undertaker inducted his wife, Michelle McCool, into the WWE Hall of Fame. However, it wasn't a very festive event for the couple because the legendary wrestler was having heart trouble at that point and had to get surgery.In an episode of their Six Feet Under podcast in June, 'Taker and McCool revealed that The Phenom underwent a heart procedure after WrestleMania 41. He got his heart fixed because of atrial fibrillation, which he was diagnosed with in March."Come to find out, you had been in chronic AFib for who knows how long. But the scary part was that you didn't feel any symptoms, so we didn't know (...) We ended up staying in the hospital for four nights where they actually had to cardiovert you and shock you back to a normal rhythm. That sadly lasted, what, 24 hours. Maybe 48. After four days, we go home, two days later, you're back in AFib. Man, I was stressed," McCool said. [H/T: Andrew Ravens of Newsweek]Luckily for The Undertaker, he got his heart fixed, and things are back to normal. He's started making appearances, most recently in San Diego during the Survivor Series: WarGames weekend.