Faeria

Here is a very solid yellow rush deck that got me to rank 15 very easily with 13 straight wins.
Draw for Wind Drake or Shaytan Demon in the beginning.
Always play 2 neutral (3 if you go second) then 1 yellow lands in a straight towards the enemy player.
Almost always hit face. Only kill creatures to protect your heavy hitters.

3 Khalim Prayer
3 Khalim Follower
2 Demon Wrangler - transform Khalim Follower or Wind Soldier
3 Soul Drain
2 Deathwish Ghoul
3 Oradrim Monk
3 Shaytan Demon
3 Wind Soldier
1 Choking Sand
3 Dune Drake
2 Zealous Crusader - play only in emergency or when seriously buffed
2 Last Nightmare

Credit goes to Twitch user itscappuccino for the deck.

After playing this deck for the majority of the 100 wins here are some suggested changes.
1 Khalim Follower to Iona, Beloved by All - punishes opponents without removal
2 Deathwish Ghoul to 2 Oradrim Templar - more useful overall as it can be played early with 1 yellow, it can dash and block enemy lands, it has more survivability and face damage