(To proliferate, choose any number of permanents and/or players, then give each another counter of each kind already there.) The ability that causes Agent Frank Horrigan to have indestructible starts to apply as soon as it's declared as an attacker
On the other side of the coin, if this did improve Pox, that would be good for opposing decks like Delver, with cheap creatures, some burn spells, and Murktide Regent, possibly the best dragon in Magic, which can utilize that swollen graveyard
Deceptively open-ended, the vizier gives you the ability to flicker an incoming attacker, remove Cartouches, permanently kill embalmed creatures, and even save a creature of your own in a pinch
Here are a few other ideas: Play Games With Apps Many companies use in-game advertising as a way to generate revenue