Random Lee W idea

Instead of the second part of it, Iron Will, giving him bonus spell vamp and life steal, how about if it restored health based on the amount of shield he has remaining? I would think about 40%-50% of it might do.

That way there's a bit of counterplay in that if you damage his shield he'll get less health, and it creates a decision for him where he has to choose between more temporary health or less permanent health.

It might need a bit of a cool down after using Safeguard though, so a lane opponent has some time to react before he heals.