[PoE 2] Endgame Crossbow Crafting Guide - for POEGuy's Warbringer Mortar Cannon Build.

Overview

This is a crafting companion for the POEGuy Warbringer Mortar Cannon / Siege Ballista build, walking through how to make an endgame crossbow at three budget tiers. The headline goal is a crossbow that grants an extra ballista totem — patch 0.5 added the ability to roll a second additional totem, so a totem-stacking Warbringer can run plus-two instead of the old plus-one, which is a major damage multiplier for this archetype.

The craft is built around a deterministic spine: start from a magic Siege Crossbow with high increased physical damage, slam flat physical with an Essence of Abrasion, then desecrate onto the prefixes using two omens to guarantee the extra-totem modifier. Every tier shares this backbone; the difference is how much you spend chasing gem levels, projectile skills and quality on top. The creator stresses that even the cheapest version comfortably clears Waystone 15-16 and all endgame content.

Pros & Cons

Pros

• 100% deterministic extra-totem outcome via Omen of the Sovereign + Omen of Sinistral Necromancy
• Cheap entry tier that still does all content — no need to overreach your budget
• Clear upgrade path: masterwork runes push iron runes to perfect for more quality/DPS, and Vaal infusions add late quality
• Crafting can recoup its own cost — the creator notes selling finished crossbows for profit

Cons

• It’s a crafting guide, not a full build guide — you still need the rest of the POEGuy Warbringer setup elsewhere
• The expensive tier leans on RNG for bonus gem levels and attributes on the exalt slams
• Vaal infusion can corrupt the weapon and lock it from further modification
• Trade-economy dependent — currency costs (essences, omens, masterwork runes) swing with the market

Key Skills

• Mortar Cannon / Siege Ballista — the crossbow totem skills the weapon is being crafted to support
• Ballista totem stacking — the extra-totem implicit is the whole point of the craft
• Additional grenade implicit — bonus projectile output on the implicit line

Gear & Anointments

The target item is a Siege Crossbow base — the creator’s preferred crossbow base for physical scaling. Craft sequence: magic base with high increased physical damage (add projectile skills on the base for the mid tier) → Greater Essence of Abrasion for flat physical → desecrate with Omen of Sinistral Necromancy (forces the prefix) and Omen of the Sovereign (guarantees one additional totem) → exalt slam (use Omen of Greater Exaltation to save currency on pricier bases) → unveil at the Well of Souls → 20% quality → iron rune sockets upgraded to perfect via masterwork runes → optional Vaal infusion for extra quality. Astramentis-style crafted-mod helpers (Astrid’s Creativity) are used on the top tier for two crafted modifiers. Specific final stat targets to be confirmed against the source video.

Endgame Notes

All three recipes are stated to be endgame-viable up to Waystone 16 and full Atlas content; the only difference between tiers is raw physical DPS and how many gem levels you land, so you can craft to your bankroll and upgrade in place as you farm.

Credits & Source

Crafting method credited to Poeguy007. See the source video for the live trade-site filters, omen usage and step-by-step craft: [PoE 2] Endgame Crossbow Crafting Guide - for POEGuy’s Warbringer Mortar Cannon Build.