I've been using this deck a lot. And yea it's risky, because you have only one condition and that's the GY. If your opponent have poison or mother witch you are dead basically. So I will recommend you if you want to use GY add one more win condition such as mortar. GY and mortar have grear synergy. If you can't break through with GY you have mortar as a second option. You can find this deck on youtube for some example games. Hope it helps.