[3.13] Multipurpose Attribute-Stacking Aurabot // 19 Auras, 3 Vaal Auras, Aspect of Spider & Smite

There are many options for the gear pieces you wanna equip on your guardian, I'll link you to this Reddit post which collects many interesting ideas.
Down below my favourite setup, which is a bit expensive but makes your guardian almost immortal.

Body Armour: rare Warlord's influenced body armour with "(12–15)% increased Life Recovery rate" or "Gain 1 Endurance Charge every second if you've been Hit Recently", chaos resistance and then you can bench-craft: multimod + life as extra ES + item drop when guardian dies (only the body armour will drop)

Weapon: Kingmaker is probably your best choice, incredibily strong when standing still and in a small place (against bosses or in rituals)

Helmet: Mask of the Stitched Demon provides a crazy amount of life regen to you guardian

Gloves: Southbound with 16% increased max life and potentially a good corruption are your best choice

Boots: rare boots with 30+ movement speed, chaos resistance (between this and the body armour you should cap it), 35+ Fire and Lightning resistance

With this setup the guardian will have about 40k life, will regen about 10k hp/sec and will be all res capped even if not affected by your auras.

With a level 21 gems with empower lvl 4 (and the +1 level of spell skill gems of the sceptre) you'll have a lvl 25+ gem, which allows you to summon up to 3 spectres.
I suggest you to use a combination of the following monsters:

- Carnage Chieftain for frenzy charge generation
- Host Chieftain for power charge generation
- Arena Master from situational speed buff
- They of Tul for situational defensive buffs (while standing in their vortex)

I personally find They of Tul a bit unreliable for most contents, but it's really nice against bosses and in rituals.

The goal is to have a Titanium Spirit Shield (minimum ilvl 80, better is 86+) with the two mandatory mods:
- Socketed Gems have 15% reduced Mana Reservation (either the Shaper's or the Hunter's mod)
- (8–10)% increased effect of Non-Curse Auras from your Skills (Redeemer's mods)

Redeemer influence is mandatory, the choice between Shaper and Hunter is dictated by the following factors:
- Shaper's bases are usually a bit more expensive than Hunter's ones
- Shaper's influence allows you to also craft "recover ES on block" (almost guaranteed with harvest)
- Hunter's influence allows you to also craft "no extra bleed damage while moving" (almost guaranteed with harvest)

The easiest way to craft such an item is using Awakener's Orb and combining two shields, one with Redeemer influence and the aura mod, the other with Shaper/Hunter influence and the reservation mod; one will be the "receiving" shield and the other will be "sacrficed".
It's mandatory that both shields have one and only one influence mod (the above mentioned aura and reservation mods), with other normal affixes.
You'll have a "receiving" shield which will obtain the influence and the mod from the "sacrificed" one, while keeping its own influence and influence mod. Therefore only the "receiving" shield has to be a Titanium base with high ilvl, the "sacrificed" one can be any shield.

Once you used the the Awakener's Orb, you'll have the Titanium shield with both the mods (both suffixes) and other random mods.
Now the process depends a lot on what other mods you hit, thse are the ideal steps:

1- Have all suffixes occupied (two are the influenced mods, the third suffix being removable with a harvest targeted remove, like a resistance), if you only have 2 suffixes you can easily harvest-augment a crit mod, guaranteeing spell crit chance (which can be removed later)
2- Clean all prefixes, this can be achieved by bench-crafting "Sufixes cannot be changed" and then scouring the item (or removing them one by one with targeted remove)
3- Decide whether you want +1 to cold or light spell skill gems (for improving either Hatred or Wrath)
4- Bench-craft the "Gain X% of Fire Damage as Extra Chaos Damage"
5- Harvest-augment fire, this is almost guaranteed to hit % increased fire damage (if you hit +1 to fire spell gems you have to remove the bench-craft, target remove the +1 fire, bench-craft again and then augment fire again)
6- Bench-craft either "Gain X% of Cold Damage as Extra Chaos Damage" or "Gain X% of Lightning Damage as Extra Chaos Damage" (the same damage type as the +1 gems you are looking for)
7- Harvest-augment cold/light, this is guaranteed to hit the +1 gems you are looking for
8- Remove the bench-crafted mod and then target remove fire with harvest (removing the % increased fire damage)
9- Harvest-augment defence, looking for a good ES mod (either high flat ES or high % increased ES), remove/add defence until you find a roll you are confortable with
10- Harvest-remove the extra suffix you had, e.g. remove crit (be careful if the extra suffix was a resistance of the same element of the +1 gems, you have to harvest-convert it into another element before removing it)
11- Bech-craft the remaining prefix you need (either flat ES or % increased ES, depending on what you augmented before)
12A- If you went for Hunter influence: Harvest-augment either physical (guaranteed) or augment attack (very likely) to hit the "no-extra damage while bleeding" mod
12B- If you went for Shaper influence: Harvest-augment defence (very likely) to hit the "recover ES on block" mod
13- Use divines or harvest-rerolls (not reforge!) to hit good rolls

The process here is very similar to the shield's one, but much simpler.
The goal is to have a Simplex Amulet (minimum ilvl 75, better is 80+) with the two mandatory mods:
- (4–5)% reduced Mana Reserved (Redeemer's mod)
- (6–9)% increased Attributes (Shaper's mod)

The easiest way to craft such an item is using Awakener's Orb and combining two amulets, one with Redeemer influence and the reservation mod (you can self craft this easily with Lucent Fossils), the other with Shaper influence and the attributes mod; one will be the "receiving" amulet and the other will be "sacrficed".
It's mandatory that both amulets have one and only one influence mod (the above mentioned attributes and reservation mods), with other normal affixes.
You'll have a "receiving" amulet which will obtain the influence and the mod from the "sacrificed" one, while keeping its own influence and influence mod. Therefore only the "receiving" amulet has to be a Simplex base with high ilvl, the "sacrificed" one can be any amulet.

Once you used the the Awakener's Orb, you'll have the Simplex Amulet with both the mods (both suffixes) and other random prefixes.
The easiest and cheapest way to proceed is to just spam harvest crafts "reforge, keep suffixes", until you hit a good combination of prefixes (like % increased ES).
If you have an open prefix (or you target-remove with harvest a prefix) you can guarantee the movement speed prefix with a harvest-augment speed craft (very expensive).
Use divines to hit good rolls, apply Fertile Catalists (if you haven't already) and annoint Champion of the Cause.

The process to craft rings is really easy, it just requires some time and currency/luck.
The goal is to have two unset rings with T1 of STR, DEX and INT and other good prefixes.

The easiest process is the following:
1- Buy unset rings with a fractured INT mod (high roll, you cannot modify it, as close to 55 as possible).
2- Apply Intrinsic Catalysts to reach 20% quality
3- Spam either "Deafening Essence of Sorrow" or "Deafening Essence of Rage", go for the cheaest option (this will guarantee T1 DEX or STR)
4- Stop only when you also hit a T1 roll of the remaining attribute
5- Use the harvest craft "reforge, keep suffixes" until you also hit good prefixes (like a high tier of flat ES)
6- Apply the bench-craft you prefer (faster start of ES recharge, -mana cost of skill, etc.)