You can play it in Commander as well, where its occasionally used in top dragon Commander decks with heavy hitters like Lathliss, Dragon Queen and Archwing Dragon
The aim here is to destroy an opponent's DARK Fiend monster when summoning the card, as this wins you the game at the end of the damage step
Look at that smug little mug
The flavor text of The Prismatic Bridge says: Starnheim Awaits. I believe that MTG awaits for us all
It's possible Lutri, the Spellchaser would have ended up fine in Commander as it's ability isn't particularly game-breaking, but the format is known for its identity as a varied experience and having a card be ubiquitous and free for players to throw into their list was probably the deal breaker
If that was the case, it would be because the game, as we know, has changed so much that it is no longer the game it used to be