Sky Striker Mobilize – Engage! (BLHR-EN090)

If you control no monsters in your Main Monster Zone: Add 1 "Sky Striker" card from your Deck to your hand, except "Sky Striker Mobilize - Engage!", then, if you have 3 or more Spells in your GY, you can draw 1 card.

spell / Normal, Battles of Legend: Hero's Revenge