You can fill your deck with other pillowfort effects like Ghostly Prison, Propaganda, and Sphere of Safety to make sure you're never attacked again
Rin and Seri, Inseparable can make especially good use of this effect, given that Mirror Entity counts as both a Dog and a Cat
Moonshaker Cavalry Any card that can reasonably be compared to Craterhoof Behemoth is bound to rank highly, and Moonshaker Cavlary certainly fits the brief
Plan your attacks carefully and dont be worried about picking on the player with no creatures in play
If a player has 10 or less life, and Ezio deals combat damage to them, you can pay WUBRG (one of each color)
Cass, Hand of Vengeance Im not sure what this does