I feel like Ixtun is actually pretty well positioned in Hero's Welcome since you have a mix of nice draw options, inspire effects, pledges, rewnowns, removal, and a few solid tutor options. This lets you more easily neutralize enemy threats while snowballing by yourself.
I chose
Xo of the Endless Hoard as my hero since, simply put, this is arguably one of the best cards in the game at this time so you want him in your hand early and often. Giving him aegis or unblockable on top of his already-copious bonuses is also wonderful.
This list has taken me to 6-3 and 7-2 finishes in its current form. I'm not sure I'll have time to play my last 5 leaderboard runs this event. A better pilot would likely have more success with it.
If I do change anything, it will be to add further power tutors (such as
Kaleb's Favor) but I think the deck is already pretty compelling as-is.
That new hooru site is insane though - I'll need to make room for it here if I play the event again for sure!