Servants with non-damaging Noble Phantasm can still be selected but the result will display a value of 0 on all damage result fields.
Buffs and Debuffs
Servant passives that can affect the Noble Phantasm damage (ex. divinity, riding, mad enhancement, etc.) are already included in the calculation and does not need manual input.
Case like Archetype: Earth's Noble Phantasm that applies Millenium Castle Battlefield (30% Buster, Arts, and Quick Card Modifier) for herself is already included in the calculation and does not need manual input.
Buffs that activates first before the Noble Phantasm deals damage must be manually inputted (ex. Ishtar increases own Buster damage for 1 turn before her Noble Phantasm damage hits).
Others
If you encounter any bugs or issues, please contact (Vinz#0775) on Discord.