Mist Wurm [HA01-EN023] Secret Rare 2007 Collectors Tin During battle between this attaching

During battle between this attaching card and a Defense Position monster whose DEF is lower than the ATK of this card

Set: OTS Tournament Pack 8 Card type: Link/Effect Monster Rarity: Ultimate Rare Attack: 1500 1 non-FIRE "Sky Striker Ace" monster If this card is Special Summoned: You can target 1 "Sky Striker" Spell in your GY

(You do not use "Polymerization"

Set: Premium Gold Card type: Effect Monster Rarity: Gold Rare Attack: 1900 Defense: 800 Neither player can add cards from their Deck to their hand except by drawing them

except "Number 39: Utopia Double"

Mist Wurm [HA01-EN023] Secret Rare 2007 Collectors Tin During battle between this attachingSet: Hidden Arsenal Card type: Synchro Effect Monster Rarity: Secret Rare Attack: 2500 Defense: 1500 1 Tuner + 2 or more non Tuner monsters When this card is Synchro Summoned, return up to 3 cards your opponent controls to the hand.