Revolving Switchyard [MP17-EN119] CommonSet: 2017 Mega Tins Mega Pack Card type: Field Spell Rarity: Common If a Level 10 EARTH Machine Type monster(s) is Normal or Special Summoned to your field (except during the Damage Step): You can activate this effect; your opponent takes no battle damage for the rest of this turn (even if this card leaves the field), also you Special Summon 1 Level 4 EARTH Machine Type monster with 1800 or more ATK from your Deck, and if you do, it becomes Level 10.