It's Jinzo! (SBCB-ENS04) [Speed Duel: Battle City Box]

"Jinzo" monsters you control are unaffected by your opponent's Skill Cards. Once per turn, during your Main Phase, if you control "Jinzo", you can look at 1 face-down card in your opponent's Spell & Trap Zones, and if it is a Trap, draw 1 card.