Although I lover the idea and think that it would allows some crazy damage sometimes, it would lower the consistency of the deck and that is something that a midrange combo deck cannot afford.

I love this deck. I want this deck. This deck dies to Blood Moon like few other modern decks I've seen. Red is the one colour this deck doesn't want, and that is literally all you would have access to if you couldn't tap your mana before it resolved, and use it to cast a Maelstrom Pulse right away. Any reason you're not running any basics at all? Surely having two islands, one plains, three swamps, and two forests wouldn't cause that much trouble to the mana base, would it? Besides, it would hurt less.

Those specific numbers are referring to the coloured mana costs of Massacre Wurm, Hunted Phantasm, Path to Exile, and Hunted Troll.

Thank you so much for your suggestions. I added some basics and I will add more if I find that I need them. Currently, I am trying to preserve my consistent mana base.

You know, given that you can get multiples of Illness in the Ranks on the field, why not run Hunted Horror?

The main reason is that it only gives your opponent two tokens and those tokens are harder to remove. It is also a tax on the mana base

My thoughts on the basic lands were said because of remembering a GP modern where a Grixis deck was packing three islands exactly for the express purpose of being able to play Cryptic Command against a deck that had landed Blood Moon. I realize that trying to do that for all the different mana requirements in this deck might well be impossible while keeping mana consistent; also, you do have means of getting rid of one in your sideboard via Ratchet Bomb, and Swan Song to prevent it hitting. Mostly, it's just a consideration that might warrant a bit of mana base testing? After all, if you can simplify a mana base without making it less reliable, my assumption is that is a good thing. However, if, as is possible, it would disrupt the mana base completely, then it is better to take the risk than make your deck run sub-optimally.

I am testing the deck and seeing how many basics I can afford to use.

Massacre Wurm is not a modern playable card. I know it's cool for sweeping away their tokens, but a 6 mana triple black card is neither good for your mana base nor good enough in modern.

I agree, do you have any ideas for replacements?

Mutilate to nuke the whole board? Or would you have enough swamps regularly enough?

I replaced all but one wurm and I don't like that Mutilate nukes my stuff as well. Thanks for the help.

Ratchet Bomb might be OK, as it can kill all the tokens, but I do feel Engineered Explosives already in the sideboard is just better here. Might be better sometimes?