Formula Synchron [DUSA-EN086] Ultra Rare Dark Dragon or when this card is

or when this card is destroyed by battle or card effect while in your Monster Zone: You can add 1 "Yang Zing" or "Zefra" Spell/Trap Card from your Deck to your hand

Set: Extreme Force Card type: Counter Trap Rarity: Common At the end of the Battle Phase: It becomes the End Phase of this turn

1 Boros Signet

Set: Structure Deck: Machine Reactor Card type: Effect Monster Rarity: Common Attack: 600 Defense: 200 You can Special Summon this card (from your hand) by banishing 1 Spell Card from your Graveyard

Formula Synchron [DUSA-EN086] Ultra Rare Dark Dragon or when this card isSet: Duelist Saga Card type: Synchro Tuner Effect Monster Rarity: Ultra Rare Attack: 200 Defense: 1500 1 Tuner + 1 non Tuner monster When this card is Synchro Summoned: You can draw 1 card. Once per Chain, during your opponent's Main Phase, you can: Immediately after this effect resolves, Synchro Summon using this card you control (this is a Quick Effect).