Since Deathtouch means only one damage is needed to be considered lethal to any blocking Creature, any extra damage will Trample over to the defending player
The key tweak is the shift in how energy works: rather than filling your deck with specific energy cards, you simply select the type (or types) of a deck when building it, and energy is automatically generated once per turn for you to attach how you wish (for two-type decks, which are required for the Dragon Pokmon lines such as Dragonites, which type comes up next is randomised, which effectively replicates a multi-type deck equivalent in real life)
Nobody would ever be willing to drop a thousand dollars on a card that WotC could turn around and put in a set tomorrow
For example, there are dozens of trading cards themed around the anime
Yes, this card is incredibly cheap, and yes it will feel incredibly broken when you cast it