That does some wild stufffor example, it gets Marsh Flats back twice for actual land ramp in Orzhov, it lets you feed cards like Dusk Legion Zealot into a Warren Soultrader multiple times, or it wrings the most value possible from cards like Boromir, Warden of the Tower and Dauthi Voidwalker
You can tap any untapped artifact you control to pay the cost of the mana ability, including an artifact creature you haven't controlled continuously since the beginning of your most recent turn
These are explained as fragments of a larger story, and are kept in the Great Illuminary
Games like Magic the Gathering (MTG) have a big leadbut, Disney
Also, since this is a Commander-only card, it gives us no indication as to whether or not adventures will be a main set mechanic
// Flying Dion's first ability will still give it flying during your turn even if Dion somehow isn't a Knight