Nevermind. I found the answer. FYI the tool tip is misleading. You can only heal for 300% of the damage the mob takes, independent of what you hit it for. ie I do Inner Beast for 600. (The mob has 1000 hp left) I heal for 1800 hp. I do Inner Beast for 600 (the mob has 100 hp left) I heal for 300. All of this will be moot next week anyways I suppose.