Rumbleweed Rumbleweed needs six lands in your graveyard to have the same mana value as Overrun, and needing only one is much better than , however, the biggest reason Rumbleweed ranks better is the potential to cost less
It's the sort of card that is important for a big explosive turn because at the end step, it sacs itself
Kyler, Sigardian Emissary Kyler is a great option for a go-wide Humans commander, but likewise fits into any number of other +1/+1 counter decks, too
There's a small window for opponents to break even on card advantage, and after that window closes, your deathtouchers, sacrifices, and regular combat turn into so much value that very few black decks should go without it
omer is quite the beating, and comes in prepared to dole out damage not just through burn, but also as a Double Striker with a bunch of counters