Smite evil

Sources of Extra Smites

 * A paladin receives an extra Smite at levels 5, 10, 15, and 20, granting a base amount of 2, 3, 4, and 5 respectively.
 * Extra Smite enhancements within the KotC tree grant +1 charge per rank, up to a total of +4 smites with 2 ranks in each enhancement.
 * Paladins regenerate smites at the rate of one charge every 90 seconds. This time can be reduced by the Unyielding Sentinel enhancement Endless Smiting.  This ability reduces the recharge time to one every 81/72/63 seconds, at rank 1/2/3 respectively.
 * Endless Smiting also grants +1 additional charges per rank.

Exalted Smite
Paladins sufficiently invested within the Knight of the Chalice tree can unlock a new upgrade for smite evil: Exalted Smite.
 * Exalted smite shares the same damage formula as a regular smite evil, and shares the same pool of charges; however, Exalted Smite grants an additional +1/+1/+2 to critical damage multiplier, and an additional +0/+1/+2 to critical threat range, at ranks 1/2/3.

Additional Uses of Smite Evil

 * Intolerant Blows