Multi-hex enchantments

[hcobb]

The self-powered Spell Shield on the 3-hex item makes it clear that the procedure is to determine the cost/time/effort (including self-powered) for a single hex item, then double the effort/cost for each previous enchantment, then , then multiply by the number of hexes.

So +5 Fine Plate that grants +4 DX with a self-powered spell shield for a three-hex giant?

By ITL 66 the mundane item is 400% of the cost given on ITL 110 so the unenchanted armor costs $20k (and takes two years to make with the giant handy for regular fittings).

Then a single wizard starts on the enchantments.

Self powered Spell Shield takes 6 * 10 * 3 = 180 base weeks or 189 average weeks for a DX 15 enchanter, 97% chance of success.
+4 DX enchantment takes 3 weeks * 2^(4-1) level * 3 hexes * 2^1 previous enchantments = 144 weeks base weeks, 151 average, 99% success.
+5 armor enchantment takes 2 weeks * 2^(5-1) level * 3 hexes * 2^2 previous enchantments = 384 weeks base weeks, 403 average, 99% success.

So only 15 years of enchantments.