At least from rank 5 and up, Embiggen Druid is fun but weak. Rogue has many counter cards like Flik and Shadowstep, and strong control decks like CW or Res Priest can easily deal with the deck's boards if you don't have an insane early ramp. Also, extreme aggro decks like Face Hunter and Token Druid can steamroll this deck if you happen to get all the high cost cards in your mulligan. If you have all the cards, play it, it's fun, but at least in the higher ranks, don't craft it if you want to play competitively.
At least from rank 5 and up, Embiggen Druid is fun but weak. Rogue has many counter cards like Flik and Shadowstep, and strong control decks like CW or Res Priest can easily deal with the deck's boards if you don't have an insane early ramp. Also, extreme aggro decks like Face Hunter and Token Druid can steamroll this deck if you happen to get all the high cost cards in your mulligan. If you have all the cards, play it, it's fun, but at least in the higher ranks, don't craft it if you want to play competitively.