I've try this deck a bit and I'm not sure it's so good as its fame.
1) Many times there's a lack of quanta
2) Some FG called 'easy' are not, think at Fire queen, you need 4 cards for win. Usually when they are out you are probably almost out of card in the deck.
3) The deck is VERY slow and FG are fast so while you wait your cards, or pray for time quanta, FG already has a small army and SoG are not enought.
4) It's enought a stupid creature with Butterfly for completely Fxxk you.
So those are some reasons that have made me doubt about the affidability of this deck.
Probably I'm a bit unlucky but in 107 games I've played everything I needed for win the FG was for 80% of the time six, seven cards before the end of the deck... and that's, in most of the case, not enought for lower 200 HP.
IF i should vote for the best FG deck my vote wouldn't go here.
Probably was good in the past not nowadays.
I'll try RoL/Hope.