SOFU-EN000 Alviss of the Nordic Alfar
Level 4 DARK Spellcaster Effect Monster
ATK 1500
DEF 1000
If only this card is banished by the effect of a “Nordic” Link Monster: You can send to the GY 1 “Nordic” monster you control and 2 “Nordic” monsters from your Deck whose total Levels equal 10, then Special Summon 1 “Aesir” monster from your Extra Deck. If an “Aesir” monster(s) in your possession is sent to your GY by your opponent’s card: You can banish this card from your GY; Special Summon 1 “Aesir” monster from your Extra Deck with a different name from the cards in your GY. You can only use this effect of “Alviss of the Nordic Alfar” once per Duel.

Source