Originally Posted by Irimar
What kind of tests are you looking for? I've got a 1.3 install I can play around with.
More a curiosity than anything about whether it buffs anyone within its range (ie. not just the closest player). I also saw a rumour that buffed players can move outside of the range but it starts a countdown. When the countdown stops, so does the buff. Not sure whether you can travel through the Nether when buffed.
As it is, this is just a snapshot and I suspect there may be many changes before the final form is decided.