I think that the most important thing is that I have read the metagame to perfection. This is the Spanish Invitational (I think that you have yours just before the Ovino) and all the players are known, you can create a list just to know how many of each deck you can expect. It's VERY important to understand that I created this variant and its maindeck choices (Such as REB) just because I expected a metagame like that.
This is the final turnout (linked at the beginning of the first post):
Almost - 3
Tezzeret - 3
Gush Remora - 2
Lavadora - 2
MUD - 2
Drain Tendrils - 2
Remora - 1
Tezzcast - 1
Gush Tendrils - 1
TPS - 1
TTS - 1
Gush Painters - 1
5c Stax - 1
TezzPainters - 1
Dredge - 1
Noble Fish - 1
And this is what I had written down, what I expected vefore the tournament:
Blue Control/Tezz/Comboish/Gush/Almost - 15/20
Workshop Decks - 2/5
TPS/Storm Combo - 2/3
Oath Decks - 1/2
Dredge - 1/2
Fish Variants - 1/2
I think that it was well predicted, and the only fail was in OAth, I was almost sure that a player was coming with it, but it just didn't matter to me.
As an additional information, this is the second year in a row that I won the spanish invitationals (Vintge All Stars), and also with the same deck,
in this link you'll fin the lists and the breakdown from the last year. As you see, there's a tradition in Spain for playing Blue controlish and comboish variants, specially amongst the best players, and that's where Tezzcast shines, in the matchup vs blue variants, at least that's why I created Tezzcast, to perform well overall in a metagame like that.