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Valiant strike
paladin attack 1

Target: one creature

Attack: Strength vs. AC, with a bonus to the attack roll equal to the number of enemies adjacent to the user

Hit: "1[W] + Strength modifier damage.
"Level 21: 2[W] + Strength modifier damage."[PH:92][HotFK:126]

Valiant strike is an at-will power available to paladins at 1st level.

Cavaliers receive valiant strike as their 1st level at-will power, in addition to either strike of hope or vengeful strike as their 1st level virtue at-will power.