If this card is in your Graveyard at the start of your Main Phase 1 and you control no Spell or Trap Cards: You can Special Summon it. During the turn you activate this effect, you cannot Special Summon any monsters. This card cannot be Tributed, except for a Tribute Summon of an 'Steelswarm' monster, and cannot be used as a Synchro Material Monster.
Atom 1.0
