Thanos, the Mad Titan

When Thanos, the Mad Titan enters the battlefield, search your library for an equipment
card named The Infinity Gauntlet and attach it
to Thanos. Then shuffle your library.
Menace
{w}{u}{b}{r}{g}{c}: Thanos deals X damage divided
among any number of targets, where X is the
number of artifacts and enchantments you
control. You gain that much life