Banishing Knack | Magic: The Gathering
Formats Banishing Knack is Legal in
Official Oracle Text for Banishing Knack
Official Rulings for Banishing Knack
8/1/2008 : "Summoning sickness" applies. The new ability can't be activated unless the targeted creature has been under its controller's control since the beginning of that player's most recent turn or it has haste.