Those Boomerang Basics + Stormchaser's Talent loops or simply countering your opponents spells should give you an army
Granted, those decks are almost all focused on milling out the opponent but the original Hedron Crab is also able to target yourself, which makes it one of the most explosive and mana-efficient self-mill engines ever printed
This might be costly, but green decks rarely have trouble powering out expensive spells
Due to how slow the Primus is to actually kill someone it is more of a stall, defense and value card than a true game ending threat
Mishra's Bauble, one of the best eggs in Magic, isnt as broken, but being a 0-mana cantrip (even if the card draw is delayed) makes it a mainstay in Vintage and Modern
Kagha is the kind of Golgari Commander that those who have played the format a while will latch onto