You can be the only one who benefits from it if you are the only one playing a lot of artifacts
When you unleash Umori onto the board, you can choose any card type, and itll discount all cards of that type by one generic while its in play
For example, Arkanons 2nd place Stasis deck from WSK 2014 (courtesy of Mgs Old School Magic blog) looks very similar to this build, but a few card choices differentiate his Stasis deck and put it in a slightly different category of deck
This sim, which has been built entirely by just one extremely dedicated fan, works just like any standard card game program would
Prizes have you sacrifice the Attraction, placing it in your junkyard
BPhillipYork: So this is basically like the Biorganic Carapace but a Reconnaissance Mission version