[Idea/Feature addition] Gloomlock Grimoire self-kill prevention

[vsenjoyer]

My friend often complains about how he's killed himself on accident using the grimoire's left-click "Life Tap" ability, which costs 25% of your health and grants 600 overflow mana. Usually, while on low health, users intend to use the grimoire's rightclick, "extreme measures", healing 40% but doing 8% less damage.

My proposition:

Neu should stop a user from using the left click ability if they are below 50% health, because clearly they're using it to heal. when in a tense bossfight, you can accidentally left-click instead of right-click and drain a quarter of your health on accident, which could throw the run/slayer.