Bonus points for being an option for the command slot, though I wouldnt particularly recommend trying to run mono-black infect (trust me, I tried)
Most of its strength lies in being a unique effect for a black creature
Its also one of the few ways to safely get rid of your own lands in case you are actually helping your opponents color fix without destroying all lands on the battlefield
Inspirit, Flagship VesselInspirit, Flagship Vessel In the command zone From the Counter Intelligence precon, this powerhouse is just waiting to spread counters love all around
One of my pet peeves about this card [and Monarchs to an extent] is pretty much the multiple activations and subsequent capacity to banish/search whatever.
Reidane / Valkmira "both is good" isn't the kind of plan that's going to overwhelm your opponents, but it will keep you just a little bit safer as you try to advance your deck's strategy