Your opponents will likely forget about the card as it sits in your graveyard, giving you room to spring a blowout when they swing in
Edgar, Master Machinist Wizards clearly went out of their way to make Edgar, Master Machinist fair, between the once-per-turn clause and the fact that the artifact it casts enters tapped, but I refuse to believe that we cant crack this like an egg we should probably start with Krark-Clan Ironworks
If it connects unblocked, it deals damage equal to that total, which can easily mean lethal in a dedicated mill deck
While you lose the creature, the value comes from the enter-the-battlefield triggers you can exploit for almost no mana
Putting subtle pressure on your opponents blocks (i.e., you can threaten to trade up your Malboro into Balamb T-Rexaur thanks to Paladin's Arms)