I'm finding this out by testing my Striker addon class, but this tactic is abusable by Shadow Blades in the main game from level 10+ for non-Cornacs (or level 4+ for Cornacs), and Shadow Blades have access Lethality to make the auto-crit even nastier.
Here's my idea for a solution:
- Blur Sight grants two sustains:
- Cloak of Shadow does what Blur Sight does now (defense). While sustained, Illuminate can blind.
- Cloak of Light makes increases Lite radius +1 to +5. While sustained, Stealth is impossible, and Illuminate deals Light damage.
- Phantasmal Shield becomes a passive buff for Cloak of Shadow and Cloak of Light:
- Cloak of Shadow gains progressive stealth bonus, and resist Light & Fire damage.
- Cloak of Light gains progressive on-hit Light damage, and resist Darkness & Blindness.
- Illuminate no longer inflicts light damage or blindness unless you have one of the cloaks sustained.
- Invisibility stays the same.