Before the expansion had even launched, people were scalping exclusive promo cards for obscene amounts of money, and even now, products are extremely hard to come by
Plus, deathtouch doesnt target creatures anyways, so ward wouldnt apply even if deathtouch was an ability
Chart shows the price of Reshiram & Charizard GX #SM247 at the end of each month going back as long as we have tracked the item.
Bouncing all nonlands for seven on your turn is basically just a worse Cyclonic Rift, but the ability to end an opponents turn if you pay the extra three is really something
If your deck cares about gaining life (to trigger effects, or hit a certain life total) than it has even more utility
It benefits from Gengars enduring popularity and Mimikyus fan appeal , and the two look spooky together on the artwork