Staring Contest (FLOD-EN064) - Flames of Destruction Unlimited

When you Special Summon a monster to the Extra Monster Zone (except during the Damage Step): You can target 1 monster in your opponent's Main Monster Zone; move that opponent's monster to their Main Monster Zone in the same column as your monster in the Extra Monster Zone. When your opponent Special Summons a monster to the Extra Monster Zone (except during the Damage Step): You can target 1 monster in your Main Monster Zone; move that monster you control to your Main Monster Zone in the same column as that opponent's monster in the Extra Monster Zone.