Linguistics (INT):
It cost 1 extra skill points to any character of opposite alignment to the language homplane. If the being is from the Inner Planes, the cost is 1 extra skill point for those of opposed element. Modron language always cost 2 skill points, if you have spent only one, you can understand but not speak. All this rules don’t count toward initial languages.
| Language | Target Groups |
| Abyssal | Tanar'ri, Abyss denizens |
| Aquan | Water elementals, Water denizens |
| Archon | Archons, Mt. Celestia denizens |
| Auran | Air elementals, Air denizens |
| Bariaur | Bariaurs, Ysgard denizens |
| Celestial | Upper-planar creatures |
| Dao | Dao, Earth elementals |
| Djinn | Djinni, Air elementals |
| Draconic | Dragons, Wizards, Lizardfolk |
| Efreeti | Efreet, Fire elementals |
| Eladrin | Eladrins, Dryads, Elves |
| Formian | Formians, Arcadia denizens |
| Gehreleth | Gehreleths, Carceri denizens |
| Githyanki | Githyanki, Red Dragons |
| Githzerai | Githzerai, Slaadi |
| Guardinal | Guardinals, Elysium denizens |
| Halfling | Halflings, Outlands denizens |
| Hellenic | Greek Pantheon and his followers |
| Ignan | Fire elementals |
| Infernal | Baatezu |
| Koine Sophias | Scholars, Sages, Very literate people |
| Marid | Marid, Water elementals |
| Mephit | Mephits, Elementals |
| Modron | Modrons, Mechanus denizens |
| Nereid | Nereids, Marids, Water elementals |
| Night Hag | Hags, Yugoloths, Grey Waste denizens |
| Planar Trade | Any |
| Slaad | Slaadi, Githzerai |
| Sylph | Sylphs, Djinni, Air elementals |
| Sylvan | Dryads, Eladrins, Faeries, Druids |
| Terran | Earth Elementals |
| Trade Tongue of Law | Harmoniums, Arcadian denizens, lawful people |
| Tso | Tso, Traders |
| Yugoloth | Yugoloths, Fiends, Night Hags, Gehenna denizens |
