Card Rules: Rulings powered by The Netrep API. This card does not target. This card cannot be activated during the Damage Step. If the number of monsters you control changes due to an effect chained to 'Urgent Tuning' , and you do not have a Synchro Monster of a Level you could Summon when 'Urgent Tuning' resolves you must show your Extra Deck to your opponent to prove that you cannot Summon a monster. You do not have to show your Extra Deck to your opponent if you would not be able to Synchro Summon at all when 'Urgent Tuning' resolves. (Because you control only 1 monster or control only Tuner monsters etc.) You can use monsters that are not affected by Trap Cards like 'Elemental Hero Wildheart' as Synchro Material Monsters for 'Urgent Tuning'. Passcode: 94634433 Set: Duelist Pack 8: Yusei Fudo Card Number: DP08-EN027 Rarity: Rare Attribute: Trap Card Text: Activate only during a Battle Phase. Perform 1 Synchro Summon for 1 Synchro Monster. Card Type: Normal Trap Name: Urgent Tuning Edition: 1st