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Defile Defile is a fantastic mono-black removal card

Its effects make it particularly good for modified and enchantment decks, but you can run a different archetype and still use Roaring Earth

Force of Nature The letter G was left in the text box instead of the green mana symbol that was supposed to be printed

So, youre developing a massive blocker, gaining cards in your hand, and going for two heavy attacks to keep aggroing the opposing player, while making sure your Leaders draw effect remains active

In other words, Proliferate lets you put more good counters on your cards which already have good counters on them, and put more bad counters on your opponents stuff with bad counters