Excalibur, Sword of Eden: With Excalibur from the Assassins Creed 's MTG set, one attack from Knuckles is enough to kill anyone
I'm thinking of things like Triplicate Titan which will have a really nice payoff and can be eaten in turn to generate mana to keep fueling your unearthing
Other takes on this strategy have centered on Brain in a Jar, which has the disadvantage that it can be slow to get going late, but its advantage, in addition to not being an enchantment, is that it has an interesting combination with Days Undoing that allows you to cast Days Undoing on your opponents turn, skipping the end the turn clause, which means that the Days Undoing ends up in your graveyard
(Do mushrooms have muscles?) Feral Thallids spore counter ability doesnt create Saprolings
It also includes Reaper from the Abyss, an absolute monster I still see players underestimate today