Removed 3x Manta Rider, 2x Oath to Oblivion, 2x Balloon Fish, 1x Storyteller, 1x Twister, 1x Windborn Champion, 1x Khalim
Added 3x Souldrain, 2x Iona's Smile, 2x Sunsilk Faerie, 2x Demon Wrangler, 1x Flashwind, 1x Windsoldier
I finally got around revising this list with making some major adjustments.
Despite 3ofs typicially improving the Mulligan consistency I've found myself stuck in game states that pushed too hard toward the 5 desert count. The outcome was low flexibility and much reliance on getting the mapdealer oath combo in order to stay relevant on board.
With these changes I've diversified the portfolio and created a better suited balance between early and lategame strengh. Of course this puts more emphasis on utilizing 1x correctly. Saving up a single Windsoldier for 3 damage to the orb can extend your reach in slower matchups by quite a bit. The same goes for delicate Twister setups.
Champion remains a strong finisher but I've rarely found myself needing a third copy. Running less copies also improves the consistency of Iona's Smile.
Speaking of Smile; I've added Sunsilk Faeries to the deck as low investment early collectors with a big upside. After using Smile you will have thinned the deck by removing the top 2 flying units and increase the chance of a flip. With an eventcount of 12 this isn't the defnitive best shell for running faeries but since they are run as a 2x there is little risk involved and you likely won't get blown out by having them removed.