DotA2 Skill: Stone Form

After a short delay, the Familiar turns into stone and smashes into the ground, stunning and damaging all targets in the area. The Familiar becomes invulnerable, and will regain its damage charges and health very rapidly. After 8 seconds, the Familiar will automatically leave Stone Form.
Stun duration: 1 / 1.25 / 1.5
Stun radius: 350
Stun damage: 60 / 100 / 140
Stun delay: 1
Stone form duration: 6
Bonus regeneration: 50 / 68.7 / 87.5