When you play a card like Stasis or Winter Orb, players naturally have less mana than usual
This way you wont have wasted the wildcard and can still use the card you traded it for
Couple this effect with cards like Wheel of Fortune that make everyone draw a bunch of cards at once, and youre in business
Looping Archaeomancers can be oppressive, especially when the correct play is often to recast a card like Cyclonic Rift
Blitzing in creatures only to have them die after one turn might not sound the most impressive, until you start slamming things like eldrazi titans, phyrexian praetors, or something like a Rune-Scarred Demon to get a powerful effect at a bargain rate
It's a good option to have if youre into artifacts, proliferate, or incubate synergies