your right the max number of grenades a warlock can toss is 16... how ever to toss that they have to chose the right perks since, "gift of the sun" and "radiant will" since these 2 perks are on the same tears as touch of flame and viking funeral well these elemate the DOT... with out radiant will and gift of the sun the max grenades a warlock can toss in super is around 4 maybe 5 if they are really really lucky.