Initiate of Mystra
Source: Player’s Guide to Faerûn
You have been initiated into the greatest secrets of Mystra’s church.
Prerequisite: Cleric level 3rd, patron deity Mystra.
Benefit: You can attempt to cast spells even within a dead magic zone or an antimagic field. In a dead magic zone, you must make a successful caster level check against a DC equal to 20 + the level of the spell you are trying to cast. In an antimagic field, you must make a successful caster level check against a DC equal to 11 + the caster level of the antimagic field. If this check is successful, your spell functions normally.
In addition, you may add the following spells to your cleric spell list.
2nd Spell Shield
5th Spell Phylactery
6th Anyspell, Greater
7th Holy Star
The anyspell and greater anyspell spells also appear on the Spell domain list. With this feat, you can cast them as regular cleric spells, not just domain spells.
No worries Kargin wouldn’t get caught worshiping out of his Dwarven pantheon, and i’m not even sure Mystra exists in this Universe. Thought i would post it, more out of curiosity.