Heroic Challenger - Ambush Soldier [NUMH-EN010] Secret Rare

During your Standby Phase: You can Tribute this card; Special Summon up to 2 "Heroic Challenger" monsters from your hand or Graveyard, except "Heroic Challenger - Ambush Soldier". You can only use this effect of "Heroic Challenger - Ambush Soldier" once per turn. When you do: You can banish this card from your Graveyard; make all "Heroic Challenger" monsters you currently control become Level 1.