CONTEXT BOMB: So, what you're seeing here was never intended to hit PBE. This is an example of us testing with extremes - while the designer working on Alistar changes is likely to tune his heal this patch, this was a check-in for a very specific goal. That is, 'Let's do some gross outrageous numbers just to find the breaking point and see how far we can go'. It's intended to be pretty out of line, and then used as a base to tune from (i.e. if 110 mana / 120 healing is unplayable and 90 mana / 180 healing is overtuned, where do we move the lever etc).
Thanks to an error in our overlay system, this got out sooner than expected. We're definitely targeting Alistar this patch (and likely his E spell), but not necessarily this hard or in this way (potentially changing mechanics over numbers).
-Scarizard