Cannot declare an attack unless a monster was Tributed this turn. During the Main Phase, if this card is on the field (Quick Effect): You can Tribute 1 other monster from your hand or field, then activate 1 of these effects;
• Special Summon 1 monster that mentions "Dark Time Wizard" from your hand or Deck, except "Swiftwind Panther Warrior".
• Send 1 Spell/Trap that mentions "Dark Time Wizard" from your Deck to the GY.
You can only use this effect of "Swiftwind Panther Warrior" once per turn.