OK, here's my take...
First, fix bugs :
- QoT AA targetting
- Shamblers AA range (cf. http://forums.demigodthegame.com/358902, very easy fix)
Skills :
Open / Close
- Lower animation time
- Closed form bonus : +100 armor, +10% armor, +10 HP / sec
- Opened form bonus : AoE attack, +50% mana regen, +5% speed
Ground Spikes
- Tweak mana cost progression : 400 / 500 / 600 / 700
- Remove armor debuff (yes, you read that right)
- Increase damage vs creeps and minions (this is her army destroying skill) : + 10 / 15 / 20 / 25%
Now, this is her mass killing skill, so it's further boosted by the Compost synergy.
Spike Wave
- Lower mana cost
or
- Make it an interrupt
Summon Shamblers
- Max cap : 2 / 3 / 4 / 6
Mulch Shambler
- Skill actually might need nerfing. But let's not touch it for now.
Uproot
Allow it to be targeted at an enemy DG with the following effects :
- stuns target for 0.6 sec (+ compost synergy)
- lowers armor by 450 / 900 / 1350 / 1800 for 4 / 5 / 6 / 7 secs
Keep the siege effects.
Shield
- Easy one : make it absorb armor mitigated damage
Goddess of Thorns
Swap the effects :
- Shield gives 15% damage reduction
- Ground Spikes does 35 DPS DoT for 20 secs
Violent Siege
Haven't seen it in action, so dunno. But AoE should be similar to that of Circle of Fire.
Entourage
Scrap damage bonus, give armor and life regen bonus instead :
- + 10 / 15 / 20 HP per sec
- +250 / 500 / 700 armor
Tribute
- make it 4 gold per shambler (now, we're talking money)
or
- each shambler around QoT (10m radius) takes 5% of the damage she's dealt in her stead
Compost
- Increase cap : 6 / 12 / 18 (ie, max effect level 2 / 4 / 6)
- Scrap shambler bonus health
- Increase shambler damage bonus : +10 per compost effect level (thus capping at 60)
- +3 % shambler run and attack speed per compost effect level
- shamblers healed by 10 / 15 / 20% opponent's life when they or QoT make a kill
- +0.4 sec stun duration per compost effect lvl when Uproot is used on a DG