Card Rulings:W Nebula Meteorite

OCG CARD RULINGS
This Card cannot be activated during Damage Step. If there are no monsters face-down, you cannot activate this card.

Sources:

Konami Yu-Gi-Oh! FAQ: Card Rulings: W Nebula Meteor. Yoan.Yuki (talk • contribs) 20:21, February 21, 2011 (UTC)