In fact, it is faster and deadlier than almost every other Legendary, which at least needs a bit more setup before they can start closing games
Alongside Venusaur and Charizard, it completes the pricey First Edition final starter evolution trio that many collectors aim to achieve
With a Gemhide Sliver in play, you can be a little loose in how you tap your lands for mana and keep creatures untapped to surprise your opponents with activated abilities or an instant spell even after your lands are all tapped
A really funny combo would be Intruder Alarm plus Torpor Orb, which keeps creatures tapped down
Moreover, it evolves from Onix
What makes the Mewtwo ex deck overpowered, though, is its synergy with Gardevoir