Have to be careful with Grim Haruspex. If you have one on the field when going off you very well could mill yourself out first.

Dalektable When using Grim Haruspex, you draw cards. That means that we will draw our Heartless Summonings and Perilous Myrs, plus we can also draw into our Altar of the Broods and Myr Moonvessels. Once we go off, you simply play the additional Altar of the Broods to mill them faster than you. If you can't find any altars, you simply kill your Grim Haruspex with the Perilous Myr or a second Heartless Summoning and then kill them with the mill. Good times.

Yeah, I literally just posted the work around for that.

use Perilous Myr to kill your own Grim Haruspex when you dont want to draw more cards. I like gravepact as sideboard againts zoo and agro decks. Gotta test it.

The thing about Gravepact is that it's redundant. By the time you can get it out and it becomes useful, you would have either won or lost at that point.

It doesn't do anything against aggro because you would need to have a HS on the field plus things to get death triggers. At that point you're probably already dropping some Perilous Myrs, which should do the trick. If not, Dismember and Aether Spellbomb are in the SB. Turn 4 to drop a GP with additional buildup and then having to drop more into it isn't viable at all.

Why don't you run Gitaxian Probes in this? Essentially makes your deck 56 cards...and this looks really fun I think I'll try to build it

Gitaxian Probes aren't in the deck solely because they aren't as good as anything else in the deck. I used to have them in, but a friend recommended that I use the Sleight of Hands over them since they contribute more to the dig. If there would be something to take out in the deck, Probes would most likely be going in.

Ok cool that makes sense...how does this deck fare against tier 1/1.5 decks? And how about vs control-y decks (my entire meta is almost all blue)

@traceurling I have played this deck a few times on local store modern tournaments.

The first time I played it did awsome, people didnt knew what the deck did so they countered my Myrs instead of the heartless summoning for example.

One guy played tougthsize on me and he removed a grim haruspex, and I had the heartless summoning in the hand.

The coming weeks when I played this deck people already knew what the deck did and how. I and it went badly only won 1 game that week againts monored cuz they cant do anything about it.

But control would hold its counters and counter your heartless summoning.

The zoo deck would sideboard all their enchantment hate.

This deck relies heavy on the heartless summoning when it is unable to resolve, you will not be able to combo.

Yeah it's a one trick pony in that regard. That's probably the most vulnerable part about the deck. Win fast or don't win at all.

traceurling I've had some success with this deck by using Gitaxian Probe to check if they have counters ready, and running Inquisition of Kozilek/Spell Pierce in the side. If they keep a hand with only one counter and you remove/counter it, then it's smooth sailing for your Heartless Summoning. After we have one down, then it's normally ok since we can start drawing tons of cards or start winning.

You could play Myr Superion

Superion is in the sideboard.

I know but in mainboard

It doesn't contribute to the combo of the deck, and generally doesn't do much unless I focus on damage. They used to be in the mainboard before the deck was changed to be strictly combo-focused. Testing them they work very well in certain cases, but unless I really want to focus on the beatdown aspect of the deck, it's much better to run something like those Sleight of Hands.

You ever consider siding a Pact of Negation?

I love this deck. i maindeck Counterspells for protecting the combo. I also run Shape Anew for digging into superion/Altar. I would definitely recommend Hurkyl's Recall for Affinity.

Maybe KCI so you can go off without Heartless Summoning???

@Fatsniper93 The problem with Krark-Clan Ironworks is that it costs 4 mana. I'd rather use Semblance Anvil if I was going to do it, since we could do an artifact creature and get both our Altar of the Broods and all our creatures for cheap.

Sorry I haven't been active recently to respond to comments.

Pact is cool but I think it's too situational. I think the deck works better off something like Thoughtseize in the SB, but I'm not really sure how to incorporate either of them efficiently.

Ironworks is just far too expensive for me to consider running and it doesn't help my non-artifact creatures.

Anvil is much the same and is also card disadvantage.

Maybe Gitaxian Probe to draw cards without any mana cost? What's 2 life if it gets you your infinite combo?

Was originally in the deck, but it takes up slots that are needed for other cards.

Gitaxian Probe is good because you can get a free draw and peek, but it doesn't net you any card advantage/dig.