This spell is a part of the Oaken Skin spell chain. It would be found in the Oaken Skin rune stone.

With this spell you shoot at great velocity 1d10 large acorns at a target in a straight line from you. Each acorn hits the target for 1d20 (per acorn) damage. You only add Runic Energy once to the entire spell damage. A critical magic will daze the target for 1 round. 

Stat Cost: 20 Soul
Casting Speed: 1
Duration: instant
Range & Area: 1 target in straight line
Fast Physical Spell
Starting Success Rate:  55
Max Mastery Rate: 85
Cost to Acquire:  50 character points

Level 2 Upgrade: Increase damage by 1d10 per acorn.

Stat Cost: 30 Soul
Casting Speed: 2
Duration: instant
Range & Area: 1 target in straight line
Fast Physical Spell
Starting Success Rate:  45
Max Mastery Rate: 75
Cost to Acquire:  100 character points

Level 3 Upgrade: Increase number of acorns from 1d10 to 1d20.

Stat Cost: 40 Soul
Casting Speed: 3
Duration: instant
Range & Area: 1 target in straight line
Fast Physical Spell
Starting Success Rate:  35
Max Mastery Rate: 65
Cost to Acquire:  150 character points

Level 4 Upgrade: 25% chance to stun target 1d3 rounds.

Stat Cost: 50 Soul
Casting Speed: 4
Duration: instant
Range & Area: 1 target in straight line
Fast Physical Spell
Starting Success Rate:  25
Max Mastery Rate: 55
Cost to Acquire:  200 character points

Weapon Affect - Acorn Shot

Can only be used on projectile weapons.

Divides the projectile shot into 1d6 projectiles, decreases the damage of each shot by 15%.

This is a Tier 2 spell

Level 1: 50/100
Level 2: 75/150
Level 3: 100/200
Level 4: 125/250