Ancient Gear Knight (Starfoil) (BP01-EN146) - Battle Pack: Epic Dawn Unlimited

This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to have be treated as an Effect Monster with this effect:
• If this card attacks, your opponent cannot activate Spell/Trap Cards until the end of the Damage Step.