This is Maly Druid Shaman
How it works is simple:
You ramp with Wild Growth and Nourish:
You use removal, Spreading Plagues, and Arcane Tyrants to get back tempo in the midgame:
Volcano Rain of Toads Arcane Tyrant
You transform into Malfurion at some point and start punching him with the hero power:
Then you use Twig or Floop to get a cheap threat:
And you kill him with moonfires and swipes:
also we have a giant frog because he was lit in the trailer