Spawn of Thraxes [Journey into Nyx Prerelease Promos] 010 or monster effect: You can

or monster effect: You can negate the activation

If this card in its owner's Spell & Trap Zone is destroyed by an opponent's card effect: You can add 1 "Harpie's Feather Duster" from your Deck or GY to your hand

Set: Duelist Saga Card type: Effect Monster Rarity: Ultra Rare Attack: 4000 Defense: 4000 Cannot be Normal Summoned or Set

return it to the hand during the End Phase

you can Normal Summon it to have it be treated as an Effect Monster with this effect

Spawn of Thraxes [Journey into Nyx Prerelease Promos] 010 or monster effect: You canSet: Journey into Nyx Prerelease Promos Type: Creature Dragon Rarity: Rare Cost: {5}{R}{R} Flying When Spawn of Thraxes enters the battlefield, it deals damage to any target equal to the number of Mountains you control. Sparks from Purphoros's forge fill the belly of every dragon.