Primal Shield

Color: White
Description: Absorbs damage until depleted then explodes, damaging nearby towers.
Cost: 0 rage
Max times usable: 100
Duration: 3s
Cooldown: 7s
Size: 80 (centered on dragon)
Damage: 15% of modified HP
Shield absorb: 100% of modified HP
Breakable by cannon/howitzer: Yes