[Any LV] Tribute: A Song Bird -> Void (To Summon) As an additional cost to summon this spirit card, you must select a spirit you control that is a "Song Bird" and move all cores from that spirit to the specified area.[LV1][LV2][LV3] (When Summoned) If "The Kaiser Empereur" was used for the tribute, you may summon as many Spirits as you like from your hand and trash with "Pentan" in their names without paying the cost. However, you may not activate their (When Summoned) effects. [LV3] (When Attacks) By destroying 3 of your cards with Pentan in the name, this spirit is refreshed.