#3 legendofa For planeschase I wouldn't say it's obscure particularly from the MOM commander precons but Archenemy is certainly less well known and your right Thunder Junction would be a prime candidate for a new archenemy though 99.99999999999999% sure that it won't happen and probably will not get another archenemy any time soon or ever as the Nicol Bolas one did poorly over all
All of the effects are ones that can do some surprisingly heavy listing, and at the worst it's still ramp
As long as you keep putting the +1/+1 counters on Herd Baloth, you can make an infinite number of 4/4 beasts and have an infinitely big Herd Baloth
C Nine mana is quite expensive, but that's the price you pay for a spell that can often end the game when cast
She also reads, Whenever a creature you control with a +1/+1 counter on it dies, return that card to the battlefield under your control at the beginning of the next end step. This means that not only can you just constantly swing in to win, but that your Creatures are bigger when they do so, and also incredibly hard to kill permanently