Loki, Lord of the Aesir [STOR-EN039] Ultimate Rare XY74 when an opponent's DARK monster

when an opponent's DARK monster activates its effect: You can detach 1 Xyz Material from this card

Set: Planar Chaos Type: Sorcery Rarity: Rare Cost: {3}{W} Return each Aura card from your graveyard to the battlefield

' priceless

Set: Coldsnap Type: Legendary Snow Land Rarity: Rare Dark Depths enters the battlefield with ten ice counters on it

while it remains on the field all of your opponent's monsters lose 500 ATK

Loki, Lord of the Aesir [STOR-EN039] Ultimate Rare XY74 when an opponent's DARK monsterSet: 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