Would really recommend Lotus Cobra; just an awesome bit of additional mana whenever you drop a land. I also really like Harvest Season; perfect to cast after an attack.

Some considerations:

• Cone of Cold: very powerful and depending on your dice-throw result, even crazier.
• Dismiss into Dream is pretty awesome in that it outright kills stuff you're tapping.
• Downpour: cheap tapping spell.
• Hidden Strings: great for its cyphering ability, that allows you to cast it for free upon successfully damaging an opponent.

This looks really good! Have you considered Grenzo, Havoc Raiser? It would really work well in here I think, especially the second benefit of his ability (the first is more or less already covered by Thantis). Another that strikes me as potentially really interesting in your deck, is Champion of Lambholt. Your deck features a lot of creatures, so many will enter to make her stronger while simultaneously making most of your creatures unblockable. Seedborn Muse could be very useful in here as well. If Thantis forces opposing creatures to attack, you want your creatures to be ready for them (untapped). Or maybe find some way to grant all your own creatures vigilance. Anyways, have fun with this build and happy holidays as well!

Nice looking deck! I like how cheap you've kept it. An interesting card to consider could be the new Homunculus Horde (constitutes exponential token growth every turn in a deck like yours, which could be useful as chump-blockers). Something that grants deathtouch to Niv could also be fun for some insta-killing, like Gorgon's Head or Basilisk Collar. Am I correct in assuming you did not include Lightning Greaves/Swiftfoot Boots because of the deck's many counterspells?

Hi,

This looks nice. I've got some ideas based on my own Krenko deck, in case you're interested:

• I'm really missing a Sol Ring in here. It's such an amazing rock that I can't imagine leaving it out of any commander deck. Maybe your local format forbids its use (that happens sometimes), but if not than I'd really recommend you consider putting it in.
• In its current form, the deck hardly contains any resources for additional draw. I would seriously consider adding Idol of Oblivion, because it's extremely on-theme for this deck. Other nice resources for additional draw/filtering could be Sensei's Divining Top or maybe Scroll Rack.
• Goblin Sharpshooter could fit well in this deck. It can also combo-off when combined with Kiki-Jiki and Thornbite Staff.
• Personally I'd choose Shared Animosity over Coat of Arms, as the latter also helps other decks using creatures of similar types, but to each his/her own of course.

Hope this helped and good luck with your deck. Enjoy the holidays!