amazon booster box pokemon Assorted boosters: 4 Packs : Toys & Games including Pokémon like Mega Clefable ex Pokémon Chaos Rising Booster Box

PSA 5-6 (Excellent to Excellent-Mint): Decent condition with moderate signs of wear but no major damage

Pikachu ex could get in quick enough to stop it reaching this explosive attack, but the only other real counter to Mewtwo ex was the similarly powerful Charizard ex, which struggled to gain traction in the meta for other reasons, and Mewtwo ex itself

If I can, what color cards can I trash with this cards effect

While it mainly acts as a reanimator to bring creatures from the graveyard to the battlefield, you can pair it with sacrifice loops involving Reveillark or blink effects to endlessly reanimate threats for value

Would be interesting to see what you can do between this and Explorer