This is the best performing deck for me day 1 where i hit Top 50 (22-8 73,3%) with it.
This deck was pretty good day one and two after the release , but when better and more refined decks come in the meta and druids become more it fall in the tier list in my opinion. Its probably a tier 3 deck , so its probably not the best deck to climb to legend if that's what you want even tough you can do it with it , but its pretty fun to play if you have the cards and burst your opponents down when they think they are safe.
So your main goal for mulligan vs all the classes is to find your Spirit of the Frog .This is the best card in your deck and will help cycle lots of cards in order to find your burst to kill your opponent. Don't get scared to cycle some of your burst like Lightning Bolt , because it can deal damage , cycle is more important. After that Fire Fly and Knife Juggler are a keep and Earthen Might too if you have Fire Fly and some times maybe Flametongue Totem too in order to push early damage. Likkim and Unbound Elemental is a keep most of the times especially if you have some good cheap overload spells. Thunderhead is your best win condition against aggro decks.
In generally you want to push some early damage with your board till you play your Spirit of the Frog to cycle as much as you can and try find your burst with them. One of your main win conditions is Doomhammer into Rockbiter Weapon for at least 10 damage or combos with Electra Stormsurge and burst damage.
Take your time every turn to think the best possible move because this deck is pretty hard to play perfectly it has lots of micro decisions that can make the difference between winning and losing a game.
I took out Krag'wa, the Frog , because i felt that i was getting most of the times 2 spells max from him and some times was even a bad top deck because i had used my spells , so with him comes out and Totemic Smash which didn't perform so good in this deck and without Krag'wa, the Frog bringing them back was performing even worst. I add one Earth Shock because there are lots of annoying taunts out there you need to get passed to deal damage with your weapons - minions and can draw a card too with Spirit of the Frog. I add Bloodmage Thalnos because it helps your burst deal more damage and can draw a card too witch is pretty useful. I put 2 Knife Juggler because i wanted to have more pressure early game to push some damage and synergies perfectly with Voltaic Burst , Thunderhead and Flametongue Totem. Feral Spirit was pretty good but it doesn't make the cut unfortunately.