The following are alterations I have made to existing pathfinder spells.
Arcane Spell List
Dragon's Rage (Replaces Fireball)
Original
Reduced the damage progression, increased cast time to 1 round, reduced the area by 5 ft.
Can be fire/cold/acid/electricity damage, no reflex save on the main damage, secondary effect based on the element.
Invigorate Body
Original (Bull's Strength, Cat's Grace, Bear's Endurance)
Combined the 3 Physical Stat buffs into one spell.
Invigorate Mind
Original (Owls Wisdom, Fox's Cunning, Eagles Splendor)
Combined the 3 Mental Stat buffs into one spell.
Divine Spell List
Cure Light Wounds
Original
Increased the range to medium, amount healed from 1d8 to 2d6, raised the cap for level contribution to +10. Granted an additional effect which provides temporary HP when healing above maximum HP.
Cure Moderate Wounds
Original
Increased the range to medium, the amount healed from 2d8 to 4d6, raised the cap for level contribution to +15. Granted an additional effect which provides temporary HP when healing above maximum HP.
Cure Serious Wounds
Original
Increased the range to medium, the amount healed from 3d8 to 6d6, raised the cap for level contribution to +20. Granted an additional effect which provides temporary HP when healing above maximum HP.
Cure Critical Wounds
Original
Increased the range to medium, the amount healed from 4d8 to 8d6, raised the cap for level contribution to +25. Granted an additional effect which provides temporary HP when healing above maximum HP.