Sky Striker Mecha - Widow Anchor (Secret Rare) [BLHR-EN092-SeR]

If you control no monsters in your Main Monster Zones: Target 1 face-up Effect Monster on the field; negate that face-up monster's effects up to the end of this turn, then, if you have 3 or more Spells in your GY, you can take control of That monster up to the End Phase.