Divine challenge

Divine challenge — paladin feature
At-Will (special) ✦ divine, radiant
Minor Action—Close burst
Special	You can use this power only once per turn.
Target	one creature within this power's range
Effect	You mark the target. The mark lasts until you use this power again. The mark also ends at the end of your turn if you didn't engage the target, meaning you neither attacked it during your turn nor are adjacent to it at the end of your turn. Until the mark ends, the target takes radiant damage the first time each round when it targets any of your allies with an attack power that doesn't include you as a target. The damage equals 3 + your Charisma modifier. Level 11: 6 + your Charisma modifier radiant damage. Level 21: 9 + your Charisma modifier radiant damage.[U :E2]

Divine challenge is an at-will power granted to paladins.

The mark applied by a paladin's divine challenge is in addition to any marks on other creatures applied by the paladin's divine sanction. The penalty to a marked target is the same, whether marked by divine challenge or divine sanction, but divine challenge marks can be maintained indefinitely, as long as the paladin continues to engage the marked target.

The damage a marked target takes for violating a hybrid paladin's divine challenge is reduced. The damage equals the hybrid paladin's Charisma modifier, and increases to 2 + the hybrid paladin's Charisma modifier at 11th level, and 4 + the hybrid paladin's Charisma modifier at 21st level.^[PH3:146]

Essentials update 2 improved divine challenge. The update removed the restriction on using divine challenge on the turn after a paladin fails to engage the marked target or challenge a different target.

Errata

This power was subject to errata and FAQ concerning when the target specifically takes the radiant damage. Based on the current text of the power, it appears to take the damage when it targets your allies with an attack power as opposed to waiting until the attack is resolved.

Feats

Feat	Prerequisite	Benefit
Elemental Challenge[DP:124]	Genasi	Allows changing the damage type