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UR Ultra Rare Superheavy Samurai Helper X EARTH Level 1 [ MachineEffect ] ATK 0 DEF 0 During damage calculation, if your Defense Position monster battles an opponent's monster while you have no Spells/Traps in your GY (Quick Effect): You can discard this card, then target 1 "Superheavy Samurai" monster you control other than the battling monster

C Common Realm Resonance X SPELL Activate 1 of these effects

Its a pretty medium threat on its own, but there are some funny combos that make it interesting

You can only use each of the following effects of "Obsidim, the Ashened City" once per turn

C Common Speedburst Dragon X DARK Level 6 [ DragonEffect ] ATK 2400 DEF 600 When you take effect damage (except during the Damage Step): You can Special Summon this card from your hand, then inflict damage to your opponent equal to the damage you took, and if you do, you gain LP equal to half that damage you inflicted