For the same mana cost, youre getting the same effect with a pretty huge bonus on top
Molten Gatekeeper - a three-mana 2/3 that has a static ability that states whenever another creature enters under the player's control, they deal one damage to each opponent
Check out her work at PfhorTheWin.com
However, what mainly keeps her down is that her effect only triggers once each turn, and only for one permanent, greatly hindering her ability as a theft commander
That aside, lets look at Old Gnawbone
Rebalancing Notes Davriel's Withering and Davriel, Soul Broker Only affects "target creature an opponent controls" Old New Old New We are removing the undesirable interactions with Faceless Agent 2/2 (from 2/1) Old New Faceless Agent is an important card for tribal decks that don't currently have the density of cards legal in Historic to fill out their curve