Would the at-will abilities Vengeful Strike and Valiant Strike count as melee basic attacks?
I am asking because the purple dragon Focused Discipline stance gives +1 power bonus to melee basic attacks.
Role-playing Games Stack Exchange is a question and answer site for gamemasters and players of tabletop, paper-and-pencil role-playing games. It only takes a minute to sign up.Sign up to join this community
For a power to count as a Melee Basic Attack it must say "This attack counts as a melee basic attack" this is a difference from "Can be used in place of a Melee basic attack."
Neither of these powers indicates that they can be used as or count as melee basic attacks, so no, under normal circumstances, they neither count as nor can be used as melee basic attacks. There may be feats or other features that allow them to be (for instance, as webbcode points out the Power of Skill feat can allow Valient Strike to be used as a MBA) , but by themselves, they are just standard action powers that involve attacks.