The fact that Marvin is a 2-mana artifact makes it an easy-to-cast colorless commander that fits into many strategies
Is Arena the answer
The simple fact is, in September 2014 R&D announced they would make the two annual blocks equal, and effective that moment, they were on a six-month schedule
While this seems like a lot, many MTG players may not be entirely happy with these changes
All in all I think this puts Minor Misstep in the same tier as cards like Spell Pierce and Flusterstorm - the heavily played sideboard all star tier
Bristling HydraBristling Hydra (1,765 Inclusions, 0% of 2,191,290 Decks) While there are certainly more interesting things to do with our dozens of energy counters than to put them all in one basket, Bristling HydraBristling Hydra is nonetheless something you can spend energy on, repeatedly