Murkfiend Liege | Magic: The Gathering
Formats Murkfiend Liege is Legal in
Official Oracle Text for Murkfiend Liege
Other blue creatures you control get +1/+1.
Untap all green and/or blue creatures you control during each other player's untap step.
Official Rulings for Murkfiend Liege
8/1/2008 : All your green and/or blue creatures untap during each other player's untap step. You have no choice about what untaps. Those creatures untap at the same time as the active player's permanents.
8/1/2008 : During each other player's untap step, effects that would otherwise cause your green and/or blue creatures to stay tapped don't apply because they only apply during *your* untap step. For example, if you control Nettle Sentinel (a green creature that says "Nettle Sentinel doesn't untap during your untap step"), you untap it during each other player's untap step.
8/1/2008 : Multiple Murkfiend Lieges are redundant when it comes to the untap effect. You can't untap your permanents more than once in a single untap step.