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Control decks thrive in metas with access to plentiful interaction to disrupt their opponents
Remember, there are better, more meta ways to build an Emerald/Steel deck, but this list maintains the core Robin Hood/Hyena/Ping identity
Playing from the graveyard is of course necessary for the card to do much of anything, while going wide is the best way to maximize the +1/+1 counters it generates
That alone is remarkable, but Commander players have found ways to make this life drain effect even stronger in Commander, such as in white-black decks
Also, there are always ways to build decks in colours that dont make sense, there are a few Blue Aggro decks, but it isnt a common thing, and you shouldnt be trying to break the mould with your first deck