Loki, Lord of the Aesir [STOR-EN039] Ultimate Rare 75 if you have a Spellcaster-Type

if you have a Spellcaster-Type monster on your side of the field or in your Graveyard: You can return 1 "Spellbook" Spell Card from your Graveyard to the bottom of your Deck

When a face-up "Wind-Up" monster on the field is destroyed and sent to the Graveyard (except during the Damage Step): You can detach 1 Xyz Material from this card to target that monster

it can make a second attack during each Battle Phase this turn

Set: Anniversary Pack Card type: Tuner Monster Rarity: Ultra Rare Attack: 800 Defense: 600 This card cannot be destroyed by battle

Loki, Lord of the Aesir [STOR-EN039] Ultimate Rare 75 if you have a Spellcaster-TypeSet: Storm of Ragnarok Card type: Synchro Effect Monster Rarity: Ultimate Rare Attack: 3300 Defense: 3000 1 "Nordic Alfar" Tuner + 2 or more non Tuner monsters. Once per turn, when your opponent activates a Spell Trap Card during your Battle Phase, you can negate its activation and destroy it. During the End Phase, if this face up card on the field was destroyed by your opponent's card (either by battle or by card effect) and sent to the Graveyard