So... there is a small discussion around the internet.
Our Throne of Vines has a new wording. And RAW it stacks (check the attachment).
This means that we can use it on a Branchwych + Vortex for the WychBomb 2.0 - she casts the Throne every turn, so she will be +4 to cast turn 2, +6 turn 3...
This is also a way to create new woods, dryads or just to use Alarielle in a odd, stationary way.
Are you aware of any rule that would be against this combo?