Wondrous Item, very rare
This tome contains information and incantations necessary to make a iron golem. To decipher and use the manual, you must be a spellcaster with at least two 5th-level spell slots. A creature that can't use a manual of golems and attempts to read it takes 6d6 psychic damage.
To create an iron golem, you must spend 120 days, working without interruption with the manual at hand and resting no more than 8 hours per day. You must also pay 100,000 gp to purchase supplies.
Once you finish creating the golem, the book is consumed in eldritch flames. The golem becomes animate when the ashes of the manual are sprinkled on it. It is under your control, and it understands and obeys your spoken commands.
Notes: Creation, Consumable
book of the big man
Lol dude will you be my dungoen master pls....Ive never sinned
I find it hard to belive that if one of the party members finds this they will have trouble beating any encounter
Definitely would be a huge boost in power, but guess just depends on the campaign if the character would have downtime of 120 consecutive days to create it. Plus the cost of 100k, but feel like at higher levels that’s not as challenging as the time is. As every good Artificer knows, time is tinkering! Or money. I mean money.
Also if it does get destroyed. That's a lot of money waisted
But iron golems are very stronk