DND_Reborn
The High Aldwin
Correct. Since the feature does not specify a melee weapon attack, it works on any melee attack, including melee spell attacks.I have just noticed that Redirect Attack is on a melee attack roll. So I'm assuming that covers spells of that nature as well? If so that's even more awesome!

An actual example from our game. A Cult Fanatic cast Inflict Wounds and missed while attacking our Drunken Master monk. The monk spent his ki point and redirected the attack against the other Cultist he was fighting. The Cultist automatically got hit by the Inflicted Wounds--which killed him.
That is why I said it is really fun, especially when the enemy's missed attack takes out another enemy.
