Just a cursory glance at the sets spoiler shows an astounding number of cards that Coalition Honor Guard makes look very foolish, and with its high toughness and easy-to-manage cost it is fairly easy to get in play and keep in play
This pairs excellently with Mahadi, Emporium Master, who produces a Treasure on your end step for each creature that died that turn, and with Prosper, Tome-Bound, who generates Treasures from impulse-drawn cards
It just misses out on the Top Ten, but it's worth mentioning
Cranial PlatingCranial Plating makes a Commander damage kill more of a possibility, so let's add LashwritheLashwrithe as well to take advantage of all the swamps in the deck
But having to commit to casting a four-drop every turn can tie up a lot of mana, so you need to be smart about your plays and maximize your attacks