Or maybe foil versions to showcase your personality in-game
Demons are often big creatures with high power, so being able to use them to blast an opponent's creature off the board or even go straight for their face gives you a way to either force the life loss that Abaddon so desperately wants, or simply bring everyone else down to your life total
One part mizzium, two parts elemental energy, eleven parts danger
If you include Forbidden Orchard, you can saddle your opponents with 1/1 Spirits and use Deadpool to make them suck life away
Even though Unpredictable Cyclone replaces the card-draw part of cycling with a free spell from your deck, you're still technically cycling a card, which means you'll trigger cards like Astral Drift
It's not hard to have more artifacts you're willing to tap to outweigh the one mana to tap it (see: Treasures)