Sky Striker Mecharmory - Hercules Base

“Activate this card only if you control no monsters in your Main Monster Zone. The equipped monster cannot attack directly. It can make a second attack on monsters during each Battle Phase. If the equipped monster destroys a monster by its attack while you have 3 or more Spells in your GY: Draw 1 card. If this card is sent from the field to the GY by a card effect: You can target up to 3 "Sky Striker" cards in your GY, except "Sky Striker Mecharmory - Hercules Base"; shuffle them into the Deck.”