Tuning Gum [MP17-EN089] RareSet: 2017 Mega Tins Mega Pack Card type: Tuner Effect Monster Rarity: Rare Attack: 400 Defense: 1200 You can target 1 face up monster you control; that face up monster is treated as a Tuner this turn. You can only use this effect of "Tuning Gum" once per turn. You can only attack with Synchro Monsters during the turn you activate this effect. During either player's turn, when a card or effect is activated that targets exactly 1 Synchro Monster you