So, I've got Alchemy on my Druid (Feral Cat) and I am using the Flask of The North - the stats of which include gaining either 40 strength, 80 agility or 42 spellpower. Whenever I use it, I either gain the strength or spellpower and then when I use it again, it will give me the other. It never gives me the agility which is what I'm kind of looking for and I've used it multiple times now, nothing.
"As of 3.3 this flask gives either a Spellpower or Strength buff to druids, meaning you have to click it twice and/or mouse over the buff to make sure you got the one you want. There is currently no widely known way to always get one or the other with either an addon or a macro."