My Monk is only level 70, but healing has been stupidly easy (and fun) because of Renewing Mists + Uplift. I currently have Uplift glyphed so that it costs Mana instead of Chi. However, I remember people saying how awful the glyph was because it drained your mana. I'm just not seeing that at this stage in Monk healing. What happens later in the game that causes Glyph of Uplift to go from being nearly OP to being a huge drain on your mana?