not rolled by the roulette
Herald of Purity is a Herald skill gem. When activated, it reserves mana for a buff that grants more physical damage for attacks and spells. It also summons a friendly Sentinel of Purity minion when the player kills an enemy or on hitting a rare or unique enemy while active.
Dues vult.
Level requirement: 16.
The roulette doesn’t roll this gem, so its delivery options haven’t been worked out.