Totems’ Action Speed cannot be modified to below base value
Skills that would Summon a Totem have 30% chance to Summon two Totems instead
5% of Damage from Hits is taken from your nearest Totem’s Life before you
Totems Taunt Enemies around them for 1 seconds when Summoned
60% increased Global Critical Strike Chance if you’ve Summoned a Totem Recently
50% increased Totem Placement range
For the Totem skill tree Mastery: 5% of Damage from Hits is taken from your nearest Totem's Life before you; if the hit is large enough to kill the totem, is the extra damage wasted as overkill damage, or is the extra damage applied to the player?
Anything which says damage is taken from something "before" something else can only work for as much loss as you have of that thing. Excess after the first thing is depleted must be taken from the original thing, just like how normally damage is taken from Energy Shield before life, but a hit which deals more than enough damage to deplete ES will take the remainder from life.
How to allocate Totem Mastery?
Allocate a Notable Passive Skill in this cluster, then this Mastery becomes available to allocate in the cluster.
Spend a passive skill point on the mastery, then choose a specific stat to gain.