[3.7] The Masochist | Herald of Purity Summoner | A nice Boss Killer and decent Mapper | Videos

As weapon we take a one handed Melee weapon (dont need to be a Wand) with alot of Minion dmg crafted on it. Try to get the "Trigger a Socketed Spell when you Use a Skill" craft on it because this provides us a HUGE QoL Bonus. Without it we need to cast Desecrate and Flesh Offering by ourself.
Another Craft i highly recommend is the Physical Hybrid "#% increased Physical Damage / #% chance to Blind Enemies on hit" wich gives us alot additional defense because we can Blind the enemys with our later following Curse on hit Setup.
If you cant effort a good crafted weapon you can also take "The Scourge" Claw wich gives also good dmg for your Minions.

Gems: Desecrate -> Spell Cascade -> Flesh Offering

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Our Body Armour is the "The Coming Calamity" which gives our Herald of Purity to abillity "Mana Reservation of Herald Skills is always 45%". This means you can put as much Support Gems in in without worrying about the Mana reservation. Until you have this Armour just play without "Multistrike" and you are good to go.
Hitting 4 Red 2 Blue can be a bit anoying because its a 144 Int Base. So i recommend to craft White Sockets on it via the Syndicate or use the Crafting Bench.

Gems: Herald of Purity -> Melee Physical Damage -> Maim -> Multistrike -> Minion Damage -> Minion Speed

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Our Shield is the "Victario's Charity". This offers our Minions to generate Frenzy and Power Charges together with the "Necromantic Aegis" Keystone from the Passive Tree. As gems we take our CWDT-Setup. You can decide if you want the "Convocation" linked together with this Setup or not (so you can recall the minions by hand).

Gems: Cast When Damage Tagen -> Immortal Call -> Convocation

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The Gloves we prioritize are the "Command of the Pit" (with one Abyss Socket if you prefer using Blood Magic or two if you are fine without Blood Magic). These Gloves gives our Minions alot of Accuracy with a Ghastly Eye Abyss Jewel in it. Here lays also our Movement Setup. I linked it with Blood Magic so we dont unnecessarily drain our mana for it.

Gems: Flame Dash -> Faster Casting -> Blood Magic

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Our Helm will be simple one with as much Life as possible and the Resistances you need. If you have an open Suffix craft some Dex on it (if not try to craft the Dex on our Ring/Amulet).
If you dont want find a good Enchantment for it you can also go with a Bone Helmet wich offers "Minions deal (30-40)% increased Damage" as implicit.
Here we have our Curse on hit Setup linked together with Culling Strike which provides us a slightly higher sustain on our Sentinels because they also refresh after we kill an enemy.
You dont necessarily need Ball Lightning, just pick the Spell you like the most and feels the best for you.

Gems: Ball Lightning (or Whatever you prefer) -> Curse on Hit -> Temporal Chains -> Culling Strike

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The Boots we take are some Rares again with as much Life as possible together with the Resistances we need and Movement Speed. In it we have a "Holy Relic" which gives our Minions and us alot Life Reg ("at level 20 on the player is about 103 health per second for 4 seconds" according to the Wiki). We also use the Vitality Aura for even more Life reg (and some additional Bonus with the right Watcher's Eye) with an Enlighten Gem (as higher the level as higher the Mana you have left for your other skills). The last Gem Slot is open to you. I prefer a Portal Gem.

Gems: Summon Holy Relic -> Enlighten Support -> Vitality -> XXX

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As Belt we take one with as much life as possible and the Resistance you need. A Stygian Vise Belt also offers the opportunity to put in a nice Abyss Jewel

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Our first Ring will be the "Essence Worm" with our "Hatred" Gem in it. This gives us alot Mana to spend and opens us to use the "Vitality" aura. Our Second Ring and the Amulet follows the same rules as our Belt (as much life as possible and the res we need). With the 3.6 Synthesis League comes a new very powerfull ring for this build. Try to get one with as much Sentinels of Purity deal (70-100)% increased Damage as possible.

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Now we come to the Jewels we take. Here we have some really nice ones wich provides us alot QoL. In general we take Ghastly Eye Abyss Jewels with +# to maximum Life and Minions deal # to # additional Physical Damage. In addition we can now pick some nice Bonus Affixes. I prefer to have some with Minions have #% chance to Taunt on Hit with Attacks and Minions have #% chance to Blind on Hit with Attacks.
if you could not effort enough dex on your gear you can also go for some jewels with dex on it.
If you want you can take a Watcher's Eye with some nice Bonus for the Vitality Aura. You can go for more Life regeneration and/or life gain on hit.

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The most important Flask we need it the "Writhing Jar". This Flask pops out some Worms which we kill immediately to spawn our Sentinels. To start a fight (Map or Boss) just spam the Flask until all Worms are out and then kill them with your previous named Curse on Hit Setup (try to get a flask with a good #% reduced Charges used roll on it so you can frequently use the flask).
The other Flask will be one Life flask with crafted Immunity to Bleeding on it. The other Flasks are open to You, i prefer a Sulphur for additional Life reg with crafted Immunity to Freeze on it, a Quarz Flask so you can walk through enemys and dont get suck (phasing) with crafted Immunity to Curse on it, and at last a Quicksilver Flask for fast Running action.

Path of Building is a great offline build planner for Path of Exile. Just download the latest version and dont forget to hit the update button for the newest version. After that you can import the Link i posted:

For Offence:
+1 to maximum number of Sentinels of Purity <--- BIS
Flesh Offering grants an additional 21% increased Attack Speed
For Defense:
30% increased Temporal Chains Curse Effect
For Others:
30% increased Desecrate Cooldown Recovery Speed

For Defense:
Regenerate 2.0% of Life and Mana per second if you were Hit Recently <--- BIS
10% Chance to Dodge Attack Hits if you've taken a Critical Strike Recently
For Others:
10% increased Movement Speed if you haven't been Hit Recently
8% chance to Dodge Spell Hits if you've
taken Spell Damage Recently

Trigger Commandment of the Grave when your Skills or Minions Kill