definitely not. It's way too cool to miss.
here the official description of the Template:
The Chosen of Mystra are powerful beings dedicated to preserving
magic and holding back the onslaught of evil. The known Chosen
are Alustriel, Dove Falconhand, Elminster, Laeral Silverhand,
Khelben “Blackstaff” Arunsun, Qilué Veladorn (a drow elf and
also Chosen of Eilistraee), the Simbul, Storm Silverhand, and
Syluné (slain by a dragon, now a benign undead spirit). Each has
the following Chosen abilities in common.
Bonus Spells (Sp): A Chosen gains one bonus spell of each spell
level 1st through 9th per day, which can be used as a spell-like ability.
Once these nine spells are selected, they can never be changed.
Most Chosen select a variety of offensive, defensive, and utility
spells with this ability.
Spell Immunity (Su): Chosen are immune to one spell of each
spell level 1st through 9th, just as if the spell immunity spell were
constantly in effect upon them. Once these nine spells are selected,
they can never be changed.
Immunities (Ex): The Chosen are immune to aging, disease, disintegration,
and poison. They have no need to sleep (although they
must rest normally in order to be able to prepare spells).
Detect Magic (Su): Line of sight range.
Silver Fire (Su): All Chosen can use silver fire (see Chapter 2:
Magic).
Abilities: All Chosen have a +10 enhancement bonus to Constitution.
can't copy-paste the official description of silver Fire. the Spellcasting Prodigy feat could also be very useful to add.
