Syntogum MP17-FR089

You can target 1 face-up monster you control, the face-up monster is treated as a Tuner this turn. You can only use this effect of "Syntogum" once per turn. You can only attack with Synchro Monsters during the turn you activate this effect. During each player's turn, when a card or effect that targets exactly 1 Synchro Monster you control (and no other cards) is activated, you can banish this card from your Graveyard; negate the activation.