Murder is there to handle early game creatures, or to handle creatures that become a threat late game. Mutilate can serve as my board wipe, as I don't anticipate either of the creatures I have dying to it. I like Dimir Charm because of its flexibility. Mind Grind is the staple, and Thought Scour is in there both as a mill and to keep my hand full.
No sideboard yet...going to build this for more casual use, anyways. If I were to sideboard, I would definitely need something for very aggressive burn decks or decks that depend on cards being in the graveyard. Also, artifact/enchantment removal. I haven't built a standard deck ever, so I don't know what I would be going up against should I play this.
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