Hey r/Pathfinder2eCreations ,

I wanted to share a high-level build concept we’ve been theorycrafting and running in a homebrew campaign. It focuses on a Dromaar-Elf Thaumaturge who eschews the typical "squishy utility" stereotype to become an absolute frontline menace.

If you love massive critical hits, terrifying enemies into submission, and completely abusing the game's reaction economy to attack multiple times outside your turn, this one is for you.

Shoutout to cool GMs: This build relies on a slight homebrew bend where a traditionally two-handed Fatal d12 weapon (like a Greatpick or a heavily modified Gun Sword) is allowed to be wielded one-handed alongside an implement.

👁️ The Build Idea & Power Fantasy

Most martial builds that fish for big crits rely on hiding in the shadows or setups that take forever. This build does the opposite. You walk straight to the frontline, look a boss in the eyes, demoralize them into oblivion, slam them into the dirt, and then delete their health bar when they try to blink.

By combining the Thaumaturge's flat esoterica damage scaling with the Fighter Archetype's battlefield control, you stop playing by the standard "3-action turn" rules. Your real turn happens when the enemies try to move.

🛠️ The Core Engine (How it Works)

• The Setup: You roll into combat with a Tome Implement in one hand for supreme knowledge/initiative bonuses, and your Fatal d12 Pick/Weapon in the other. Thanks to Implement's Empowerment, you get passive flat damage bonuses just for having your hands full this way.
• The Archetype: Taking Fighter Dedication at Level 2 opens the door to the ultimate martial reaction pool.

The Feat Progression Milestones:

• Level 4: Reactive Striker (Fighter) – You gain your first Attack of Opportunity. If they run, cast, or reload, they get hit.
• Level 5: Weapon Implement (Thaumaturge) – You pick up your second implement, unlocking the Pick Critical Specialization. Now, every crit adds a massive chunks of flat damage based on your weapon dice.
• Level 8: Slam Down (Fighter) – Formerly known as Knockdown. For 2 actions, you make a regular Strike, and if it hits, you get a completely un-penalized Athletics check to trip them.
• Level 14: Esoteric Reflexes (Thaumaturge) – This is where the build breaks. You gain an additional reaction every round that can only be used for your Weapon Implement's Implement's Interruption.

🔄 Abusing the Reaction Loop

Once you hit higher levels, your combat loop becomes a terrifying meat-grinder.

1. Your Turn: You use Exploit Vulnerability to expose a Mortal Weakness or Personal Antithesis. Then, you use Slam Down. You hit them hard, and slam them face-first into the dirt. They are now Prone and Off-Guard (-2 AC).
2. The Enemy's Turn: They are prone, terrified, and frustrated. They have to spend an action just to stand up. The moment they do, Reaction #1 (Reactive Striker) triggers. You swing with full MAP-less accuracy against a flat-footed target, fishing for that Fatal d12 crit.
3. The Next Action: If they try to swing at your party's squishy caster or your Inventor buddy, Reaction #2 (Implement's Interruption) triggers. Since your weapon implement is Adept, even a normal hit interrupts and cancels their action.

You are effectively attacking 4 times a round, making the GM terrified of doing anything within 10 feet of you.

🧮 The Crunch: Dissecting the Fatal d12 "Oneshot"

Let's look at the actual dice pool at Level 17 when this build reaches its absolute peak with a Major Striking weapon and an optimized party setup (flanked, frightened enemy, and a nice status buff from a teammate):

• A Regular Hit: Deals 4d10 + 21 Physical + Elemental Runes. Solid, consistent frontline damage.
• The Critical Hit (The Fatal Explosion): Because of the Fatal d12 trait, your 4 base d10 dice transform into d12s and double. Then, you add the extra Fatal d12 bonus die, double your flat bonuses, and add the Pick critical specialization flat damage.

Combined with a high Mortal Weakness trigger (around 20 flat damage on high-level bosses) and a setup from your party's Inventor boosting your weapon with a localized kinetic burst gadget, your critical hit pool turns into a massive bucket of dice:

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• Average Damage: ~149 damage on a single reaction.
• Max Damage Potential: 216 damage.

The best part? You can do this twice a round outside of your actual turn. If the boss survives the initial Slam Down, they are usually left standing with a sliver of health, only to be instantly vaporized the moment they try to take a step.

If you are looking for a build that offers the ultimate "Executioner" power fantasy while providing massive frontline control and group damage buffs via your third implement (Regalia), I highly recommend trying this out!