Decree of Justice
Sorcery
Create X 4/4 white Angel creature tokens with flying.
Cycling (, Discard this card: Draw a card.)
When you cycle Decree of Justice, you may pay . If you do, create X 1/1 white Soldier creature tokens.
Illustrated by
World Championship Decks 2004#jn8RareEnglishLegality
Rulings
When you cycle this card, first the cycling ability goes on the stack, then the triggered ability goes on the stack on top of it. The triggered ability will resolve before you draw a card from the cycling ability.
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.
The cycling ability and the triggered ability are separate. If the triggered ability doesn’t resolve (due to being countered with Stifle, for example, or if all its targets have become illegal), the cycling ability will still resolve and you’ll draw a card.
A mana cost of means that you pay twice X. If you want X to be 3, you pay 
to cast Decree of Justice.