This clever pairing turns a massive life total into an immediate, game-ending drain. Because Soul of Eternity scales its power and toughness to match your current life total, sacrificing it to Disciple of Griselbrand yields a monumental chunk of life. That sudden influx of life immediately triggers Enduring Tenacity, converting every single point of life you gained into direct life loss for your opponents. Even better, Enduring Tenacity's lingering presence on the board ensures your life-manipulating engine keeps running smoothly.