This is a high mana Thrall build which is slightly off-meta and great for killing squishies, especially Nova.

The core of the build is longer range and duration Feral Spirit at Levels 2 and 3. Root that Nova (W) and kill it (E). Play like normal Thrall but Feral Spirit squishies. Never engage with Feral Spirit on cool down if Nova's around.

Tier 1 - Ranged poke / finishing

Tier 2 - She's not expecting to be rooted from that distance

Tier 3 - More time to get there and kill

Tier 4 - Stun and damage

Tier 5 - General sustain

Tier 6 - Finisher

Tier 7 - Damage and slow

Enjoy - probably need to hearth more than a normal thrall build