And finally, Id cut Maelstrom Colossus or Sweet-Gum Recluse for Hullbreaker Horror
Then you can spend one of each mana giving her the 5C color identity as a Commander and then you untap your attacking horde, give them trample, lifelink and haste like the ones you just attacked with and get another combat phase this turn
Scott said it best in his affordable staples article: a green version of Inkshield is more than playable
Ouroboroid Considering Bristly Bill, Spine Sower has shot up in price to like $70, it doesn't surprise me at all that this 1/3 for four mana is preselling for $20-$30
Generally speaking, there should always be more cost 1 cards than cost 2 cards, more cost 2 cards than cost 3 cards, and so on and so forth
There are even cards like Gix, Yawgmoth Praetor that encourage your opponent to attack other players so you can choose your goad targets more efficiently