Muktol

22-3 is a crazy good result. I have tested a mono white variant in my pauper deck test offensive and it performed quite well, only having problems against mono black control and an Orzhov life gain/ drain deck.
[[Seeker of the Way]] and the low number of lands pointed more towards an aggro deck for me :)
I know I'm annoying some people with my repeated questions but: Why don't you use deck descriptions? Until early 2017 you did, but not any more now.

From my experience [[Rune Snag]] only is good if you have a high number of additional draw. You need to have 1 in the graveyard to be equal to [[Mana Leak]] and 2 to be better, highly unlikely without carddraw. If you want to use it to protect you creatures from removal then [[Spell Pierce]] could do the trick, or something like colour-protection.

The manabase looks a little bit complicated. Why do you use [[Boros Garrison]] in an aggro deck and [[Kabira Crossroads]] when [[Radiant Fountain]] has the same effect but enters untapped? If you want to ad another special land then [[Teetering Peaks]] could be worth a look.

On the on hand you have very aggressive creatures, like [[Blighted Agent]] and [[Lost Leonin]], on the other hand you have creatures like [[Chained Throatseeker]] or [[Phyrexian Juggernaut]] that require a lot of mana and a plan to keep you alive until they are ready to deal damage. The deck looks like a collision between a tempo/ midrange deck and an aggro deck, but usually such combinations don't work out too well. Do you have some results from playing it?

[[Chatterstorm]] is banned in pauper.

With [[Springleaf Drum]] this shouldn't be that much of a problem.

I would switch [[Iron Apprentice]] for [[Arcbound Mouser]]. Yes, you only can move the counters from Arcbound onto other artefact creatures, but this should be no problem in the deck, and lifelink is a really valuable ability.

[[Intangible Virtue]] then. And I would remove [[Daxos, Blessed by the Sun]] for something like [[Crusader of Odric]], [[Seraph of the Masses]], [[Silverwing Squadron]] as you have enough life-gain and these would profit more from a high number of tokens on the field.

Not a vampire, and again something with cmc3, but with all the deathtouch [[Hooded Blightfang]] could be worth a look.

Without informations on the deck, which weren't there when I wrote this, how should I know? Normally I get to see decks here that are finished or just need tuning.

Good red carddraw is a rare one. [[Wheel of Fortune]], [[Ogre-Head Helm]], [[Dangerous Wager]] or the other draw/ discard spells, like [[Magmatic Insight]], [[Tormenting Voice]], [[Cathartic Reunion]], and so on, come to my mind.

[[Rise of the Hobgoblins]] is illegal in this deck and you need to remove another 20 cards to get down to 99 + Krenko

[[Defile]] instead of [[Cut Down]] and [[Morsel Theft]] instad of [[Essence Extraction]]?

[[Dawnbringer Cleric]] could be used instead of [[Raptor Hatchling]] if you prefer versatility over power. [[Dreadhorde Arcanist]] (budget-question) in combination with [[Curse of Stalked Prey]] allows you to re-cast [[Pyroclasm]] each turn, which could also be interesting.
[[Gauntlets of Light]] or [[Solid Footing]] could give the deck some options.

Pauper uses [[Thorn of the Black Rose]]/ [[Phyrexian Rager]] as draw-creatures, and [[Read the Bones]]/ [[Sign in Blood]] as draw spells.
Personally I'm running [[Duress]] in the sideboard in case I have to many removal and too few targets for them.

What about [[Cast Down]] or [[Defile]] as removal?

Super scary to see (At least in commander) would be [[Goblin Sharpshooter]] with [[Basilisk Collar]]. Poisoned machine-gun anyone?
If you want to add first strike to the deck I would rather use [[Viridian Claw]] because it can be played and equipped faster. With low power creatures the trample is not really needed.
Depending on the meta/ legality [[Thorn of the Black Rose]] could also be an option.

What about [[Vraska, Swarm's Eminence]]?

A deck description is always a good thing to give for other players, especially when starting new with the game. You can put details on the strategy of the deck, about the budget you want it to be in, legality, if you're willing to buy/ trade cards, and other informations you want to share with us into it. This makes it a lot easier for other people on this website to help you, especially with decks that feature a lot of cards with only 1 or 2 copies, as it can be hard to guess what you want to achieve with such a deck.

[[Last Thoughts]] would be a cipher card that allows you to draw a card while [[Rogue's Gloves]] or [[Zephyr Boots]] could do the same in artifact form.

Some cards from newer expansions allow you to create ally tokens: [[Captain's Claws]], [[Gideon, Ally of Zendikar]], [[Retreat to Emeria]].
Shapeshifters could also be an interesting way of getting allies on the field: [[Irregular Cohort]], [[Mirror Entity]]