the problem that I have found is that Mystic is too slow and cost to much for blocking.
Murmuring Mystic happen to be one of my win condition (the other being
Tempest Djinn). So the objetive of the deck is doing tempo and controlling the board until he comes into play.
Also more decks are side boarding more sweeper cards like ritual of soot, goblin chainwhirler, and cleansing nova.
That's why
Disdainful Stroke and
Favorable Winds are on my sideboard
spell pierce and dive down save your creatures and you already are playing siren stromtamer.
I've tried
Spell Pierce and I'm 50/50 between it and
Syncopate.
Dive Down might be a great addition, I'll try it...
The reason why, I feel, so many decks use mist-cloak herald and curious obsession combo is because of all card advantage that you get. It keeps you hand fresh and counter magic up.
if you ever get the chance, take a look at my tempo deck and we an compare notes.
I don't run
Curious Obsession because I have lesser creatures than you and sometimes I prefer to keep them from attacking to chump block against some decks. But your deck is awesome,
Curious Obsession fits like a glove.
Thanks for your comment ^^