It may be worth noting that Elixir of the Mongoose is slightly better than Major Agility for warriors. Using the conversions of
33 agi = 1% crit and
22.08 crit rating = 1% crit:
[Elixir of Major Agility]:
[top] 35 agi + 20 crit rating
38.5 agi + 20 crit rating (with Kings)
[top] (38.5 / 33 + 20 / 22.08)
2.072% crit
[Elixir of the Mongoose]:
[top] 25 agi + 28 crit rating
27.5 agi + 28 crit rating (with Kings)
[top] (27.5 / 33 + 28 / 22.08)
2.101% crit