Umbreon GX (Secret) 154/149 - Holofoil SM Base Set - Secret Rare Number_AGOV-EN012 then you can Special Summon

then you can Special Summon this card from your Fusion Deck (You do not use ""Polymerization"")

FormStage 2 - Evolves from Dark Omanyte

except Gladiator Beast Bestiari

Colorless Pick and Choose Choose either Burned or Poisoned

Grass Miracle Powder (10) Flip a coin

Umbreon GX (Secret) 154/149 - Holofoil SM Base Set - Secret Rare Number_AGOV-EN012 then you can Special SummonRaritySecret Rare Card TypePokmon Hit Points200 HP FormStage 1,GX Evolves from Eevee TypeDarkness Darkness Strafe (30) You may switch this Pokmon with 1 of your Benched Pokmon. Darkness,Colorless,Colorless Shadow Bullet (90) This attack does 30 damage to 1 of your opponent's Benched Pokmon. (Don't apply Weakness and Resistance for Benched Pokmon.) Darkness,Colorless Dark Call GX Discard 2 Energy from your opponent's Pokmon. (You can't use more than 1