I can easily see this becoming a card that people build noncreature spell decks around, especially given that the options listed on the card are quite powerful and there are defensive and offensive angles to each of them
Nothing else in the deck cares about counters, so you wont randomly hose your own deck plan, which is always annoying
If that creature is legendary, its controller loses 3 life
I started playing Pokmon TCG after wanting to show a little more love to my personal favourite psychic-type, Gardevoir
If Dour-Port Mage leaves the battlefield at the same time one or more other creatures you control leave the battlefield without dying, its first ability will still trigger
Without a doubt, this card is the stuff of legends, well beyond even the hallowed halls of the rarest Pokmon cards