Doom Cannon [Onslaught] 238 when your opponent activates a

when your opponent activates a Spell/Trap Card during your Battle Phase

Set: Star Pack ARC-V Card type: Synchro/Effect Monster Rarity: Shatterfoil Rare Attack: 2400 Defense: 3800 1 Machine-Type Tuner + 1 or more non-Tuner "Superheavy Samurai" monsters This card can attack while in face-up Defense Position

You can only activate 1 "Last Hope of Nephthys" per turn

when your opponent activates a Spell Card (Quick Effect): You can Tribute this card

Doom Cannon [Onslaught] 238 when your opponent activates aSet: Onslaught Type: Artifact Rarity: Rare Cost: {6} As Doom Cannon enters the battlefield, choose a creature type. {3}, {T}, Sacrifice a creature of the chosen type: Doom Cannon deals 3 damage to any target.