Ink, Invisible

• Cost: base 50 gp (or more, for higher level versions)
• Weight: 1 lbs.

Invisible ink is a staple of spies, rebels, and secret societies everywhere. Messages written with invisible ink only become visible under specific circumstances. Common circumstances involve 'reading by the light of the moon", 'reading by candle light', reading while singing', etc.

More restrictive requirements could be things like 'reading by the light of the last full moon of summer', 'reading by a candle light made of human corpse tallow', or 'reading while singing the hymnal of worship to the Goddess of Light'. The GM is free to interpret and levy any requirement they wish, and players making Alchemical Ink may set any condition they desire. Be wary, though, of setting too dire a condition!

Revealing the secret message with the proper triggering agent is a full-round action per page of text. A successful Craft (alchemy) check reveals the message without the proper trigger and takes 1 hour (the DC varies by ink quality).

Reading the invisible ink WITHOUT the proper conditions (detailed above) is much more difficult. A successful Linguistics check against a DC set by the quality of the ink (see below) reveals the message without the proper trigger and takes 1 hour per page.

To make Invisible Ink requires a Craft skill check against a DC of 15+ double the CR desired. Thus a pot of level 1 Ink requires a CR of 17, level 10 Ink requires a CR of 25, level 20 ink requires a CR of 55, and level 35 in requires a roll against a CR of 80 (!!).

You can purchase this item at a higher creator level than the minimum required to cast the spell. Doing so increases the potency of the item as described above, but also increases the cost, as follows:

Creator Level	Cost	Save DC	Damage Dealt	Man Off	Man Def
1	75 gp	-	-	-	15
2	169 gp	-	-	-	16
3	281 gp	-	-	-	17
4	413 gp	-	-	-	19
5	563 gp	-	-	-	20
6	750 gp	-	-	-	22
7	938 gp	-	-	-	23
8	1,200 gp	-	-	-	25
9	1,500 gp	-	-	-	26
10	1,875 gp	-	-	-	28
11	2,325 gp	-	-	-	30
12	2,813 gp	-	-	-	31
13	3,413 gp	-	-	-	33
14	4,200 gp	-	-	-	35
15	5,325 gp	-	-	-	37
16	7,238 gp	-	-	-	39
17	9,750 gp	-	-	-	40
18	13,500 gp	-	-	-	42
19	18,000 gp	-	-	-	43
20	24,000 gp	-	-	-	45

Creator Level	Cost	Save DC	Damage Dealt	Man Off	Man Def
21	31,875 gp	-	-	-	47
22	42,750 gp	-	-	-	48
23	56,625 gp	-	-	-	50
24	75,000 gp	-	-	-	52
25	97,500 gp	-	-	-	54
26	131,250 gp	-	-	-	56
27	172,500 gp	-	-	-	57
28	232,500 gp	-	-	-	59
29	307,500 gp	-	-	-	61
30	408,750 gp	-	-	-	63
31	540,000 gp	-	-	-	65
32	708,750 gp	-	-	-	66
33	937,500 gp	-	-	-	68
34	1,241,250 gp	-	-	-	70
35	1,653,750 gp	-	-	-	72

• Crafting: Profession (Alchemist) (DC 25)