Unstable Evolution [5DS2-EN030] Common Token Monster Once per turn: You can

Once per turn: You can target 1 monster in your GY

then target 1 Machine or Dragon-Type monster your opponent controls

For the rest of this turn after this card resolves

Set: Shadows in Valhalla Card type: Xyz/Effect Monster Rarity: Secret Rare Attack: 0 Defense: 2600 2 Level 4 monsters When this card is Xyz Summoned: You can discard any number of cards

the ATK and DEF of all face-up monsters your opponent controls become half their current ATK and DEF (even if this card leaves the field)

Unstable Evolution [5DS2-EN030] Common Token Monster Once per turn: You canSet: 5D's Starter Deck 2009 Card type: Equip Spell Rarity: Common While your Life Points are lower than your opponent's, the equipped monster's original ATK becomes 2400. While your Life Points are higher than your opponent's, its original ATK becomes 1000.