Those are all good ideas... the deck really hasn't needed any help on mana though. It comes out very fast. Also I like being able to play double red cards like Warren instigator on curve.

True, you really don't want to be unable to cast your cards on curve, so colorless lands are not great here. What about replacing a land with Chrome Mox though? That card is great at enabling fast starts and produces red.
A couple more ideas for you: Burn at the Stake, Battle Hymn. They are similar to cards you are already playing, so i don't i think i need to comment on them.

Wow battle hymn is amazing... I need that ASAP. For the mana crypt to work, I'd need much more artifacts. Mana crypt and others would enable lightning fast starts. But that's more of a Daretti build. This is more of a tribal combo theme...

I don't understand what you are saying about Mana Crypt. It wasn't mentioned in any of the comments and it's already in your list.

Sorry for the confusion... I mixed up Chrome Mox with Mox Opal... nevermind. :)

How much gas have you been getting with Sword of the Animist? I'm agonizing over it for my Krenko deck at the moment.

I mostly run krenko 1v1 and honestly sword only comes in if I'm stuck on 3 mana or if I'm top decking to pull lands out of the deck...

My krenko deck Mob boss edh is probably just as effective and it costs so much less. Why do you use complex combos when all it really takes is a couple mana sources and untap outlets such as Skirk Prospector and Umbral Mantle

scheerlc8520 This deck is meant to include as many of the combos I can so that way I can opening hand start with 2/3 of the pieces and draw or tutor into the other. Its a strong 1v1 deck and reliably goes off by turn 4 or 5. Skirk Prospector and Umbral Mantle are a couple good pieces but having more than one card that does the same thing increases your chances of hitting the combos consistently.

As far as the price tag... this is on the cheaper side of competitive edh. The cavern, blood moon, and Goblin guide are not absolutely needed but sure do help in certain match ups. Thanks for the feedback.

I do like how yours goes off quickly but in 9 of 10 games I can combo enough to kill someone with etb triggers or by flat out damage by turn 7 but there's the chance I can combo at at point as early as turn 3. So for the price I prefer my $70 but looking back as some of your card choices it does make sense why you put them in there. My Mob boss edh took on so much hate at my local store that I switched to Rose of Regeneration if you lose friends from playing krenko I would recommend a deck like mine because there are plenty of combos but none that are infinite while still being super effective

You might not have room for it but Clickslither works pretty well in my deck and seeing you produce so many goblins it's just another way to pack a punch and can be used as an outlet for damage after a spawning combo

Hey! I'm another Krenko pilot. Love the deck. Looking at your maybe board, I highly recommend both Boggart Shenanigans and Mana Echoes.

Hell yea Goblin brethren. And I agree on those cards. Maybeboard things for me are stuff I need to acquire still and may deserve a spot in the deck... I'm also chewing over adding 0 drop mana rocks like mana crypt or chrome mox.

Mana Crypt is amazing. I haven't tried Chrome Mox, but I could see it being good, although I don't feel it is as good in a mono colored deck as it is in multicolored decks.

How do you like Fireball? I was just thinking about it. I run Burn at the Stake, but 5 mana is a lot. But it does 3x the number of creatures tapped for it. I'm beginning to find it hard to find spots in my deck for cards because each and every card has a purpose. Its driving me mad. I'm currently looking into red spells with draws tacked on to them to tear through my deck faster to find combo pieces.

Coat of Arms....

Coat of Arms is a great card and an immediate threat but the 5 cmc has kept me away from it. Atleast in mainboard, perhaps it could be a sideboard card for control players.

this deck is pretty amazing but I do see room for a couple of good cards. such as Boggart Shenanigans. and I would chip away Hellraiser Goblin and Goblin Rabblemaster for something less risky. such as Fervor and maybe Goblinslide. I know goblins are meant to be dangerous but you don't want to get carried away and end up defenseless.

This is a tribe deck, yet I see no Coat of Arms. Please explain.

Sorry, didn't see the other comment above.

My favorite low cost option to run in any goblin token deck is Altar of the Brood. Nothing like a mono red mill!

I love that card. I run it in my Keranos, God of "wait, what just happened?!" and people hate that. I could see the value on that one. I'll give it a few test runs and see how it goes. If it earns a permanent spot, I'll update the description to include the infinite mill combo.

Just rummaging through other people's Krenko-Lists for ideas. Good, one, yours. Personally, I dislike the small 1/1-goblins unless they come with a sac-effect for Thornbite Staff and Shenanigans. Instead, I run a lot of Threaten-effects, the most useful probably being Kari Zev's Expertise. They do untap Krenko and, in combination with a Sac-outlet, function as indirect defense against other creatures. Also, there is one non-goblin that nicely fits the token/sac/infinite-theme: Rakka Mar. Also good: Thousand-Year Elixir.

Recently I started experimenting with Last Chance, but I'm not yet sure about that one.

Volkbrecht Thanks. When I first built my Keranos infinite combo deck, a friend told me I should run last chance with Isochron Scepter and Sundial of the Infinite for infinite turns in red... It's an awful combo but if it works, it'd be hilarious.

As far as Krenko, my style is to be very aggressive and greedy with my plays. I attempt to go off as early as possible and put the burden of finding answers squarely on my opponent. If they do, they probably win. If they don't, then I win. In true red player style, I play it with reckless abandon with little regard to future planning.

Thanks for the suggestions. I'll keep them in mind.

Have you ever thought about putting Skirk Fire Marshal into the deck. I see you already have a Basilisk Collar

drksamurai Thanks for the suggestion. Basilisk collar is in the maybeboard as I thing I'd like to acquire and test out. It hasn't made the list yet. And I have looked at Skirk Fire Marshall and I see the value but I went away from the goal I had in mind. I want this to play like a modern fast tempo deck. Playing low casting cost spells and reaching the end game quickly. Fire Marshall would be just another wincon in a deck with plenty already. For that reason, I intentionally left it off the list and maybeboard.

Thank you for taking the time to leave me a comment. If there's any other suggestions people have, please let me know.