Rune of Protection: White | Magic: The Gathering
Formats Rune of Protection: White is Legal in
Official Oracle Text for Rune of Protection: White
Cycling (, Discard this card: Draw a card.)
Official Rulings for Rune of Protection: White
10/4/2004 : Can be used even when there is no damage to prevent. It prevents the next damage (if any) from the source this turn.
10/1/2008 : Cycling is an activated ability. Effects that interact with activated abilities (such as Stifle or Rings of Brighthearth) will interact with cycling. Effects that interact with spells (such as Remove Soul or Faerie Tauntings) will not.