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 - $7.00
Lightly Played Unlimited - $6.30
Moderately Played Unlimited - $5.70
Heavily Played Unlimited - $3.70
Damaged Unlimited - $3.00