The second bonus grants, in fact, all four Mantras (fully benefit from all enhancements), but since the Monk can only have one Mantra as a skill choice, only one of these Mantras can be empowered with Skill Runes, and only passive effects are given: only the currently chosen Mantra can be empowered with active effect. With two Mystic Allies, one will, in fact, gain a quad bonus: for example, +40% (10% x 2 x 2) damage with Fire Ally rune and The Crudest Boots. For Mantra, it only applies to unmodified passive effects, without a Skill Rune. The first bonus affects all bonuses of the Mystic Ally except the plain damage done and 'on hit' effects activated bonuses are also unaffected. The damage of your Mystic Allies is increased by 3000% for each Mystic Ally you have out ( Monk Only) (6 pieces) Attacking enemies creates your chosen Mystic Ally that lasts 15 seconds, up to 10 Mystic Allies. Gain the passive abilities of the five runed Mystic Allies at all times.Your Mystic Allies no longer take damage ( Monk Only) (4 pieces) You gain 5% damage reduction for each Mystic Ally you have out.

Gain the base effect of all four Mantras at all times.Increases the passive effect of Mystic Ally and the base passive effect of the Mantra by 100% (2 pieces).The set consists of seven pieces, six of which are required to complete it, and two of them are Monk-specific. Diablo II: Resurrected Review - Pile Of Old Bones

Diablo 3 monkey king set dungeon