Doom Shaman

“This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is a Normal Monster on the field, you can Normal Summon it to have it become an Effect Monster with this effect. ● Once per turn: You can Special Summon 1 Fiend-Type monster from your hand or from either Graveyard. When this card leaves the field, destroy all Fiend-Type monsters Special Summoned by this effect.”