Darkness and Metal types was introduced alongside the corresponding Pokmon Gold and Silver video game, the Dragon-type was introduced in the Japanese Dragon Selection set
Maybe the best design in the set, maybe a mistake, saved only by the fact that its never been in the discussion for banning, as far as I know
Just think of how many two-creature combos allow you to immediately win the game
This and each of the other three planeswalker cards in the set have unique, original art
So, Creatures Enchantments, and Artifacts are considered Permanents but Instants and Sorceries are not
Stay Awhile And Listen As someone who grew up with Magic sets being released in "blocks" of three sets on the same plane, where they would slowly expand on themes throughout the block, I'm loving this multiple set take on Innistrad