Activate only when an effect is activated that would destroy 2 or more cards you control. Negate the effect and destroy that card. Then, you can Special Summon 1 Stardust Dragon from your Extra Deck.
Near Mint Unlimited - $16.60
Lightly Played Unlimited - $15.00
Moderately Played Unlimited - $13.30
Heavily Played Unlimited - $11.70
Damaged Unlimited - $8.30
