The Dragon you fetch up goes into your graveyard, which is great for Bladewing, and while youre only meant to activate this once per turn, you can actually hold priority to do it twice for some fun combos like using Moltensteel Dragon to buff itself up and then becoming Skithiryx to deliver a fatal blow with ease
Promo Cards Event-only promos like Pikachu Illustrator or Tropical Mega Battle are ultra-rare and often worth thousands
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)
Red-Green: 4 Power Secret Reach Warning
Given how good the archetype is in the format, Sephiroth was an easy top pick for that reason
Krakens, leviathans, octopi, and serpents are literally called sea monsters in Magic