Overlord of the Balemurk Duskmourn MR Overlord Overlord of the Balemurk is great because it mills four cards as early as turn two, which is stellar for graveyard shenanigan decks
You can always fire it off to blank something that targets you, too, since it gives a player hexproof in addition to small creatures
Have interesting cards to discard, madness, flashback, etc
For example, curving Emberheart Challenger into Monstrous Rage and Boros Charm can transform it into a 7-power trampling double striker, hitting for a staggering 14 damage as early as turn three
This card has always been an interesting colorless variant of Wheel of Fortune that can be used to force a temporary new grip of 7 cards for the turn, and then you return to the old hand
These cards are: Oko, Thief of Crowns breaking the format