Loki, Lord of the Aesir [STOR-EN039] Ultimate Rare Common You can only use this

You can only use this effect of "Veidos the Dragon of Endless Darkness" once per turn

in face-up Attack Position

If this card is in your GY

OR a Spell/Trap Card is activated: Pay half your LP

Loki, Lord of the Aesir [STOR-EN039] Ultimate Rare Common You can only use thisSet: 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