Tanngnjostr of the Nordic Beasts

“When a monster you control is destroyed by battle and sent to your GY: You can Special Summon this card from your hand. Once per turn, when this Defense Position card on the field is changed to face-up Attack Position: You can Special Summon 1 "Nordic Beast" monster from your Deck in Defense Position, except "Tanngnjostr of the Nordic Beasts".”