Every synergy that I expected to come up did come up
As a commander, shes all about ending games through combat, not value engines
There are only two Iconic cards at the moment, and there isnt yet enough data to estimate the chance of pulling one
Nevertheless, Shiva can attack once on the second turn after play, making it an interesting combination between an enchantment and a creature
This would be like if Steamflogger Boss was just chilling for over a decade, then one day they make some cool contraptions and assembling two-for-one is degenerate because they all say stuff like when you assemble this contraption, cast Cruel Ultimatum. 2
Until then, Marvin will probably be involved in some of the coolest janky combos at Commander tables where it makes an appearance