To be Honest, I don't blame my landcount that day.
Hmm...it seems nevertheless that both games you lost, were due to manadeath...

I also think that 15 lands is too low. 16 lands seems the very minimum to me. As Di said, we always need at least 2 lands per games.
The one-land difference is not huge but that's maybe what made you lose those 2 games...

Anyway, I could also test Daze (as a 3-of) : they are awesome! I 've just could test against Survival bant and they really shine. I am really pleased with them. Anyway, Sur-Bant is a very favorable match up...
I'd like to add the 4th daze , but i don't know if I still have the free slot for it But 3 is already good and gives to the deck this extra-protection i was looking for.