Once we start considering the Fogs, there are a couple of uses
4 K'rrik, Son of Yawgmoth A Mono-Black Phyrexian Horror Minion, while K'rrik, Son of Yawgmoth may have a mana value of seven, three mana of its mana cost comes in the form of Phyrexian Mana, meaning it can often be cast for a mere four mana
First, there's March of the World Ooze, a mythic enchantment that turns all your creatures into powerful 6/6 oozes
Legendary Creature - Warrior Squirrel Gyome, Master Chef Trample At the beginning of your end step, create a number of Food tokens equal to the number of nontoken creatures you had enter the battlefield under your control this turn
Most of the time, the cheapest card prices will be from Spain or Italy (as they are in this case), which of course is fine if you're from those countries, but might mean that if you'll mail-order them, you'll have to pay more shipping or even toll costs than is reflected in the price numbers here