5 Color Death Punch

Hm, I don't understand what you are trying to achieve. You say you try to get as many Hondens as possible, which is indeed a good thing if manage to do that. But your choice for the commander keeps me scratching my head. Korona needs lots of creatures in play and a backup plan if the opponent survives the onslaught. The former has nothing to do with your Honden gameplan and I don't see any cards that solve the latter problem.
So, first thing to do would be to decide what you actually want. I actually like layered decks with more than one path to victory, however, I still wouldn't recommend mixing themes that have zero interaction. You run only 19 creatures, some of which are high-end-fatties, so Korona doesn't have much to work with and you plan to use your tutors to support the Honden strategy ... I just don't see this working! Either focus more on Korona (and safeguard yourself against her!) or switch to a different Commander. Child of Alara or Progenitus are your best choices of the few other 5-colour-Legends.

Unfortunately, this makes it difficult for me now to make suggestions because so much delends on this decision. And maybe you insist on keeping both Korona and the Honden gameplan. Here are some things I would do regardless of those decisions:

* Watchwolf => Fleecemane Lion
* Feldon's Cane => Thran Foundry (can also be used on opponent's graveyard) or Elixir of Immortality
* Worm's Tooth, Kraken's Eye, Angel's Feather, Demon's Horn, Dragon's Claw: They are all pretty useless in a 5-colour-deck and generally very weak and outdated. Replace with cards like Paradise Plume (at least that also generates mana), the mighty Sun Droplet (triggers in EVERY upkeep, including your opponent's!) or Clearwater Goblet and/or safe up some open slots, we'll need them.
* Fireball is oldschool but outdated. The weapon of choice for Commander is Comet Storm.
* Abu Jafar ... again, cool but outdated. Try Serene Master.
* Deathgreeter => Blood Artist
* Boros Recruit => Figure of Destiny (still a small beater but so much potential in longer games)
* Typhoid Rats => Gnarlwood Dryad
* Rancid Rats => Baleful Strix
* You only run 3 planeswalkers, so Deploy the Gatewatch is pretty useless. +1 open slot
* Chaplain's Blessing is just bad. If you want more lifegain, don't waste slots like this, use creatures instead (to support Korona). Like Gerard Capashen for example or Auriok Champion or whatever.
* I don't see anything that supports the drawback of Demonic Collusion. Either replace with better tutor or +1 open slot
* Elven Cache => Eternal Witness
* Infernal Tutor is about the worst tutor for highlander decks ... +1 open slot.
* Traumatize is devastating if followed up with ... *something*, usually with Haunting Echoes. But this deck doesn't even run Tormod's Crypt, so Traumatize will be useless at best and helpful for your opponent at worst (because EVERY EDH deck uses it's graveyard as a resource!). Either add pieces that combo with Traumatize or +1 open slot.
* Spellbook? Additionally to Library of Leng? At the very least, this should be upgraded to Thought Vessel, but I think EDH decks can afford to run Venser's Journal. There is also Reliquary Tower for that matter, but in a 5-colour-deck you probably don't want another land that produces colourless.
* Consider Beacon of Unrest instead of Animate Dead. Make that decision after you made your first round of changes, though, because many of them will up your mana curve.
* You run revised duals but not a single fetchland?! Maybe you don't own the more expensive ones, but considering your other cards I am pretty sure you do have some of those fetchies from Mirage.

What I will be doing now: I assume you keep both Korona and the Hondens. I will optimize the deck towards Korona and consider the Hondens a backup plan. This is what I would do:

* Korona wants many little critters that have lots of abilties to boost, right? I am missing Vampire Nighthawk.
* Sterling Grove is both a tutor for enchantments AND protects them, which I consider a must-have for a Honden strategy. Replaces the Infernal Tutor.
* Aura Mutation and Artifact Mutation are both removal spells (you need more removal) that also provide you with tokens for Korona. They are instants, even, so you can nuke something EOT, get the tokens and attack with them right away.
* As I said, you need a backup plan for when you release Korona but doesn't manage to kill and then switches sides. The best solution would be a Fog since it leaves you and your forces undamaged and doesn't kill Korona, so you'll get another swing with her without having to recast her. Arguebly the best Fog variant would be Constant Mists but I could also see Respite or Tangle in this, maybe all three.
* We saved some open slots. We need more creatures for the Korona attack plan. Here some suggestions:
- Deathrite Shaman (universally useful)
- Chasm Skulker (more free creatures)
- Serra Ascendant (mean in EDH since you start out with 30 life!)
- Soulfire Grandmaster (you run a few direct damage spells, right?)
- Solemn Simulacrum (mana ramp, mana fixing, a warm body and yet it doesn't cost you a card - basically a must-have)