If you also attack with Phyrexian Dragon Engine, you still trigger Mishras attacking trigger, but then meld the two
Three Visits cantrips
Being able to escape this is a nice touch, so I could see it slot into decks that are filling their graveyard and never want to leave mana unused, but its hard to see this doing all too much in most decks
The invading army is led by Bhaal, Lord of Murder, Myrkul, Lord of Bones, and Bane, Lord of Darkness
The temptation to add a Renegade Map is a strong one, but the ability kind of runs contrary to what we want to do: it enters tapped, and it replaces itself with a land, which is basically only a small upgrade in an improvise-heavy list