Ducker Mobile Cannon [LODT-EN037] Super Rare Null During battle between this attaching

During battle between this attaching card and a Defense Position monster whose DEF is lower than the ATK of this card

make yourself take no battle damage from that battle

If this card in its owner's possession is destroyed by an opponent's card (by battle or card effect): You can target 1 Level 8 or lower DARK Dragon Synchro Monster in your Graveyard

It''s also said that when the three are together

Set: Duel Terminal 4 Card type: Synchro/Effect Monster Rarity: Ultra Rare Attack: 2700 Defense: 2000 1 Tuner + 2 or more non-Tuner monsters When this card is Synchro Summoned

Ducker Mobile Cannon [LODT-EN037] Super Rare Null During battle between this attachingSet: Light of Destruction Card type: Effect Monster Rarity: Super Rare Attack: 500 Defense: 500 FLIP: Select 1 Level 4 monster in your Graveyard and add it to your hand.