Not a great photo, and the blues aren't actually painted but I used the shadeswraith boat from dreadfleet - it's small compared to the actual model but it doesn't look too too bad when on the base.
Currently playing around with this as a changehost, hopefully GHB 2019 drops it by 40 - 60 points for geminids or a balewind. Main goals are to sacrifice pinks from boating and arcane sacrifice, early aethervoid pendulum from the Changeling or the pinks when they move up via the boat in the hero phase if they have an easy line for sniping or shackles to slow the whole army. Then if the sacrifice/boat is enough and Changeling didn't early swap or reveal for the pendulum he can summon in blues turn 1 onto objectives or to hold up lines and to block up their move with the shackles. Seems like a fun board control list with endless tricks.
Leaders
Gaunt Summoner (Arcane sacrifice, bolt of tzeentch, gryph feather charm)
Lord of Change (Mark of the Conjurer, Firestorm)
Changeling ( Treason of Tzeentch (Don't love the spell, but it's super appropriate to the Changeling)
Units
3x 10 Pink horrors
2x 10 Blue Horrors
2x 10 Brimstone Horrors
Spells
Lauchon (see picture)
Aethervoid pendulum (first round changeling if they make too much of a castle or easy to set up with Lauchon on pinks)
Soulsnare shackles (also a good drop after pinks, boat themselves up turn 1, I would like the shards instead but this caps at 2k)
2000/2000