@Starrybrow
I've seen two new guides for a Harpy's Roost 2-fodder build, but I haven't tried them yet so I can't vouch for them. The first has one build, the second has three builds (for Harpy's Roost, Crystal Pools, and a compromise build for leveling in both venues), as well as more in-depth explanation of how to use them.
"Rooster" build by Achi: http://www1.flightrising.com/forums/gde/1806208
Pools, Roost, and Double-Duty 2-fodder trainers (three slightly different builds) by Redfoot: http://www1.flightrising.com/forums/gde/1799039
I've seen two new guides for a Harpy's Roost 2-fodder build, but I haven't tried them yet so I can't vouch for them. The first has one build, the second has three builds (for Harpy's Roost, Crystal Pools, and a compromise build for leveling in both venues), as well as more in-depth explanation of how to use them.
"Rooster" build by Achi: http://www1.flightrising.com/forums/gde/1806208
Pools, Roost, and Double-Duty 2-fodder trainers (three slightly different builds) by Redfoot: http://www1.flightrising.com/forums/gde/1799039