Likewise, when using Reshirams Blue Flare, you still have to discard Energy
Bulk Treasure creation is an absolute premium effect for the format, but you dont necessarily need to fork out for Ancient Copper Dragon or the aptly-named Dockside Extortionist
Heat Shimmer picks up a theme started by Kiki-Jiki, Mirror Breaker by making temporary tokens that are copies of a creature
Meanwhile, in the Pokmon TCG, opinions are mixed too
Chthonian Nightmare isnt as good at reanimating big creatures, since what you can get back gets limited by the amount of energy it can produce
Now you do need to have a location in your hand for his effect to do anything, but with some smart mulliganing and/or a good amount of draw, that should be consistently achievable on curve