Airplay Mirroring Mac Download Freeįor Dark Souls III on the PlayStation 4, a GameFAQs message board topic titled 'Best weapon to infuse with Crystal Gem for an Int Build?'. For Dark Souls III on the PlayStation 4, a GameFAQs message board topic titled 'Best weapon to infuse with Crystal Gem for an Int Build?'. Most sorcerers infuse their main weapon crystal for the damage and infuse.