Its at its best in a control deck as a win condition that also gets rid of a problematic permanent when it enters
Brallin, Skyshark Rider + Shabraz, the Skyshark The partners with commander pairing of Brallin, Skyshark Rider and Shabraz, the Skyshark largely cares about looting and, yes, wheels, but Brallin offers a genuine discard payoff
Calendar and Events Previews Release Dates WPN IN-STORE PLAY EVENTS START JAN 16 Explore the dual-aspect plane of Lorwyn and Shadowmoor at your local game store
Given that you'll already be dealing with your graveyard and sacrificing with black cards anyhow, it's not hard to get plenty of value out of Moonshadow's single mana cost, with menace being a little added insurance to make sure it doesn't get blocked too easily after you do
If all players can't agree if the card qualifies, you may ask an outside person for a final determination