Togwaggle Druid is a recently popular deck type that gained some play in the late meta game of The Witchwood expansion. The deck is unique in that it looks to fatigue itself, use King Togwaggle, then use Azalina Soulthief to copy your opponent’s hand with the King’s Ransom card in it. Once you accomplish this, they can’t switch the deck back permanently because you can just use your own King’s Ransom card.
The Boomsday Project brought it a couple of interesting additions to the deck. Biology Project which gives you and your opponent two mana crystals, and Dreampetal Florist which can largely replace Twig of the World Tree and reduce the cost of either Togwaggle or Azalina.