Creatures with evasion are a good target for this equipment, and extra combats can squeeze even more value from the sword
Gorex, the Tombshell Super-delve makes Gorex, the Tombshell intriguing as it cuts into the commander tax, allowing you to keep your commander close at hand
Good luck finding a better looking one
Then Mjlnir deals damage to each opponent equal to the number of tapped creatures that opponent controls
Resolving one with the help of a Thoughtseize or a Duress probably isnt that difficult, but I think naming Elspeth, Suns Champion or just Sphinxs Revelation is devastating
Trazyn the Infinite is by far the most versatile commander of the bunch in this respect, and you could easily remodel the entire deck list just to include various bits of Trazyn tech