Nasty card draw from decks that have the right fodder to sacrifice to draw a ton of cards or mill some stuff in sacrifice matters or mill decks which, as mentioned above, are very strong
Open the metal briefcase, and play
Whenever Barret Wallace attacks, he deals damage equal to the number of equipped creatures you control to defending player
Isperia, Supreme Judge The sphinx Isperia was once the guildmaster of the Azorius Senate on the plane of Ravnica
If you need a bit more of a push to maximize your convoke triggers, you can play the Invasion of Segovia, which, when it flips to Caetus, Sea Tyrant of Segovia (a very impressive name for a 3/3 creature), it gives all your noncreature spells convoke, letting you bust out some combat tricks when you're normally tapped out
The scary part