Castlight/sunlight maggot/skull lanter - light source should be able to be seen by other players
Remedy/resist curse - should have buffed up your resistance for a set time period along with curing build-up
Aural Decoy - Should have made a common noise emitted from players such as a weapon banging against the ground/wall, or a grunt.
Dark Orb - Projectile should have been faster
Dark magic - should have done more damage the more humanity the target has
All fire spells - Should have been able to be used as a light source
Acid surge - Should have been a weapon buff that reduces enemy equipment durability by 5 per hit
Poison/toxin mist - Wider AoE/more potent(?)
Undead Rapport - Effect lasts indefinitely until either target dies, user dies, or user logs off. Target follows user.
Seek guidance - Player sees significantly more "phantom players" running around while it is active.
Bountiful/Soothing sunlight - Slightly lowered faith requirement. Increased range
Tiny being's ring - +10 or 15% HP
Hawk Ring - +100% damage for headshots