Harpie Channeler

“You can discard 1 "Harpie" card; Special Summon 1 "Harpie" monster from your Deck in face-up Defense Position, except "Harpie Channeler". You can only use this effect of "Harpie Channeler" once per turn. While you control a Dragon-Type monster, this card's Level becomes 7. This card's name becomes "Harpie Lady" while it is on the field or in the Graveyard.”