I've been experimenting with psychic terrain teams and believe that:
A) they are viable
B) Indeedee-F is a better setter than lele:
Indeedee-F (F) @ Terrain Extender
Ability: Psychic Surge
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
IVs: 0 Atk
- Expanding Force
- Healing Wish
- Calm Mind...