Edge of Autumn
Duel Decks: Knights vs. Dragons — common
Sorcery
Edge of Autumn rulings:
2021-03-19: Edge of Autumn checks how many lands you control as it resolves. If you control five or more lands, it simply does nothing as it resolves.
2008-10-01: 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.