Miscalculation

Counter target spell unless its controller pays {2}.
Cycling {2} ({2}, Discard this card: Draw a card.)

The List

World Championship Decks 2000

Urza's Legacy

Counter target spell unless its caster pays an additional o2.
Cycling o2 (You may pay o2 and discard this card from your hand to draw a card. Play this ability as an instant.)

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.