Versatile

For every Attack Skill used recently, +12% additional Spell Damage, stacking up to 3 time(s)
After casting a Spell Skill, the next non-Sentry Attack Skill is guaranteed to deal a Critical Strike. Cooldown: 0.6s
After casting a Spell Skill, the next Channeled Attack Skill is guaranteed to deal a Critical Strike. Cooldown: 0.6s