Normally, the big problem is that any kill spell can stop matters
It was originally printed way back in 2004s Darksteel expansion, and that version of the card actually fetches a higher price - $39 vs
Most people I see online talk about using Mew to See Off Jumpluff with a Prism Energy, allowing Mew to run more Rainbow Energy in the deck and use the Grass-type Mass Attack more easily
It had an artifact theme, and Millstone is an artifact that can be tapped to have a target player put the top two cards of their library into the graveyard
Thopter Spy Network would make this plan look silly by ensuring that Sigrist's opponents would be buried under a mountain of card advantage
3k as Commander, Prerelease foil $17) Exquisite Blood (109k, SL Dracula foil $34) Sanguine Bond (129k, TSR Retro foil $17) Anguished Unmaking (244k, Textured foil $27) Mortify (122k, Player Rewards $4) This is solid value, considering that theres a whole lot of Mortify and Unmaking out there