I changed my mind and im going to give up on forest flight and shadow step so I installed the full mod. My only problem so far is with Twisted Curse. The effects I found on spells.txt are those:
entry0 = {"et_duration_sec", 1000, 5, 0, 8 },
entry1 = {"et_debuff_movespeed", 200, 5, 0, 42 },
entry2 = {"et_hits_persec", 800, 1, 0, 4 },
entry3 = {"et_drop_a_head", 1900, 100, 0, 42 },
entry4 = {"et_spelldamage_magic", 400, 200, 0, 133 },
entry5 = {"et_spelldamage_poison", 400, 200, 0, 133 },
entry6 = {"et_essence_debuff_stats", 265, 6, 0, 42 },
entry7 = {"et_debuff_attackspeed", 300, 5, 0, 42 },
entry8 = {"et_debuff_movespeed", 200, 3, 1, 42 },
It fits with the small description for the spell ( damages, slows and reduces attributes ) but not with the detailed effects shown below
http://postimg.org/image/5ao52dmk5/ .
This bothers me a little and if you could fix this it would be appreciated.
PS: Im sure you can add more effects to be shown as ancient bark for example displays and this one only 5.
Edit: Im not sure if its only me because of incorrect install or everyone has this problem . Venomous Entrapment displays an effect from forest flight: immobilize opponents. However there is no such effect for the spell in spells.txt.