This card is insane out of Mti (and with thimblerig), an end the run ice that can double as a nesei counter is strong anyway but with the positional power of Mti (and thimblerig) you can just make servers that look quite weak require 3-4 or even 5 clicks to get through.
The fact it ends the run also means it needs to be broken to even threaten it's trash ability usually. - There are a few niché cases where you trash it as soon as you rez it, to stop stimhack money being spent for example.
Outside of Mti or thimble, the card is still strong, but you need to think more carefully where to put it.
Easily the best of the Mopus cards.