Why Boarding Party but no Bloodbraid Elf

Untapping Gilanra seems like a good way to generate lots of mana and draw more cards. Seeker of Skybreak, Instill Energy, Nature's Chosen, Curse of Bounty, and Patron of the Orochi are good options for this.

Knowledge Pool and Possibility Storm might interest you too. They allow you to get multiple Krark triggers and they turn his downside (getting the spell bounced to your hand) into a bonus.

Thank you for your suggestions!

king-saproling Untapping her is a great way. Im thinking of Burst of Strength ( untap plus ping prevention), Emerald Charm, Ornamental Courage, Stony Strength and Sudden Spinnerets.

Reason being they are instants. So that they may trigger the Krark once more. What are your thoughts?

Knowledge Pool lean towards win-more card to a key piece to this deck. Will miss it.

However, Possibility Storm sounds fun! Definitely giving it a shot in near games.

Sure thing! Those instants seem good too, however they're only reliable if you have Krark's thumb out. Otherwise half the time you'll just be wasting mana (if Krark bounces the spell to your hand, it doesn't resolve). With the untappers I mentioned, there's no risk that Krark will counter them.

I have to disagree with your assessment of Knowledge Pool. It's a stand-alone win con and accelerator. Compare it to the cards you have listed in your win con section: those cards don't do much on their own, they require a lot of setup. Knowledge Pool immediately turns the game in your favor as long as you have Krark out. It disrupts your opponents while netting you huge advantage thanks to Krark's ability. If left unchecked, you are likely to win via the Pool + Krark. It's definitely tricky to use correctly, but worth the effort: you can arrange your triggers so that Pool's effect resolves first when you cast spell#1 - that way you always get spell#2 from the pool with a 50% chance to copy spell#1. Spell#2 will also trigger Krark if it is an instant or sorcery. If it is your instant or sorcery, there's a chance Krark will bounce it to your hand, allowing for loops; e.g. if you have Krark's Thumb + Brass's Bounty + Knowledge Pool + Krark, you have very high odds to recur Brass's Bounty as much as you like, generating as much mana as you want while endlessly recurring/copying other instants or sorceries you play alongside the combo. I can break down how the combo works if you like, let me know!

Also I think Tavern Scoundrel would be good here. Sorry for the huge comment haha

king-saproling Ah, now i understand where you are coming from with the untapping suggestions.

No apologies for giving valuable comment/ suggestions to upgrade a jank deck! Let me try to break it down

1) Cast Brass Bounty

2) AP stack trigger Krark, the thumbless (1st), Knowledge Pool (2nd)

2.1) Win flip - double cast Brass Bounty

2.1.1) Cast card exiled with Knowledge Pool

2.1.1.1) Win Flip - double cast Brass Bounty

2.1.1.2) Loses Flip - Brass Bounty gets bounce back to hand

2.2) Loses flip - active spell goes back to hand

3) Use treasures from Brass Bounty to cast other shenanigans

4) AP stack trigger Krark, the thumbless (1st), Knowledge Pool (2nd)

4.1) Win flip - double cast active spell

4.1.1) Cast card exiled with Knowledge Pool

4.1.1.1) Win Flip - double cast Brass Bounty

4.1.1.2) Loses Flip - Brass Bounty gets bounce back to hand

4.2) Loses flip - active spell goes back to hand

or

4) AP stack trigger Knowledge Pool (1st), Krark, the thumbless (2nd)

4.1) Win flip - double cast exiled Brass Bounty

4.1.1) Resolve spell cast from hand.

4.1.1.1) Win Flip - double cast active spell

4.1.1.2) Loses Flip - Active spell gets bounce back to hand

4.2) Loses flip - Brass Bounty goes back to hand

Mana base is goals. Love the variety of arts.

Heartless Hidetsugu seems like a good way to pressure life totals for your x spells (especially because they are difficult to pull of in a 4 player pod)

Harmonic Prodigy double krarks

Beanstalk Giant some nice ramp early game and a great beater for the late game