Divine Plea is one of a Holy Paladins two main sources of mana regen (along with illumination). The spell is on a one minute cool down and returns 25% of your total (maximum) mana over 15 seconds while reducing healing done by 20%. Because the spell is based off total mana, it scales with intellect, and raid buffs (Mark, Kings and AI).
Note, when considering to stack Int, remember that each point also gives a small amount of spell crit and spell power (which is not considered here).
|Int||Mana||DP||MP5 (60s CD)||MP5 (90s CD)|
Returns on Divine Plea by character intellect
|Per Int||Mana||DP||MP5 (60s CD)||MP5 (90s CD)|
Returns on Divine Plea per point on intellect
Total mana from character intellect = 4394 + (15 * (Intellect – 102) * 1.15)
4394 is the base mana, and 102 is the base intellect of a level 80 Paladin. Intellect after the base amount gives 15 mana per point, then multiplied by 15% from holy talents.