Tinkerers constantly dabble in clockworking, creating special familiars that they regularly upgrade and with which they form bizarre bonds.
At 1st level, a tinkerer forms a bond with one of her creations, and begins play with it at no cost. This functions as the familiar option of the wizard’s arcane bond class feature, with the tinkerer’s effective wizard level equal to her alchemist level. If a tinkerer would gain a familiar through another class, those levels stack for purposes of determining the familiar’s abilities.
A tinkerer’s familiar can take any shape the tinkerer wishes, but its statistics and abilities are identical to a clockwork spy with the normal adjustments and abilities for a familiar applied, and it is a construct with the clockwork subtype. At 3rd level, if the tinkerer has the infusion discovery, a clockwork spy familiar can deliver the tinkerer’s extracts with a range of touch for her. At 7th level, a clockwork spy can communicate with constructs with the clockwork subtype. Unlike most familiars, a clockwork spy does not grant special abilities to its master.
With 1 minute of work and a successful DC 15 Heal check, a tinkerer can restore 1d4 hit points to her clockwork spy familiar. At 4th level, a tinkerer can restore 1d6 hit points to her familiar in this same way. This amount increases to an additional 1d6 hit points every 4 levels thereafter (2d6 at 8th level, 3d6 at 12th level, 4d6 at 16th level, and 5d6 at 20th level).
At 2nd level, a tinkerer can spend 1 hour working on her clockwork spy familiar to enhance it with one of the options from the following list. At 5th level, the tinkerer can choose a second option from the list. The same option cannot be chosen twice.
A tinkerer can change the enhancements applied to her familiar, but doing so takes 1 hour of work per enhancement she wishes to change.
This ability replaces poison resistance +2, poison use, and poison resistance +4.
At 6th level, the tinkerer turns her familiar into a clockwork familiar that takes any form she wishes. She must choose which type of item is installed in the clockwork familiar. She gains the clockwork familiar at no cost, as if she were a 7th-level spellcaster with the Improved Familiar feat.
This ability replaces swift poisoning.
At 8th level, a tinkerer can spend 1 hour working on her familiar to enhance it with one of the options from the following list. A tinkerer can change the enhancement applied to her familiar, but doing so takes 1 hour.
This ability replaces poison resistance +6.
At 10th level, a tinkerer has learned how to change the type of magic item her clockwork familiar can carry. This requires 1 hour of uninterrupted work. A tinkerer can change the type of item her clockwork familiar carries only once every 24 hours. Additionally, a tinkerer can remove a spent item and install a new one as a move action.
This ability replaces poison immunity.
At 14th level, a tinkerer can use her mechanical mastery to create clockwork mimicries of powerful magic items. Doing so takes 1 hour of uninterrupted work, and allows the tinkerer to create a wondrous item that functions for a number of hours per day equal to her alchemist level. When creating such a clockwork item, the tinkerer must use materials worth an amount equal to the wondrous item’s construction cost. She need not meet any of the item’s other creation requirements. A tinkerer cannot create a mimicry of a consumable wondrous item or a wondrous item with finite charges, and she can have only one mimicry at a time. The clockwork item never functions as a wondrous item for any other creature.
The tinkerer can spend 1 hour disassembling a clockwork mimicry and reassembling it into a mimicry of a different wondrous item. When she disassembles a clockwork mimicry, she can salvage parts worth half of the mimicry’s creation cost. She still must pay the full creation cost for the new mimicry. This resets the duration the mimicry functions per day.
This replaces persistent mutagen.