Dragonblade
Adventurer
Yes, you are correct. A circle around the power means that it is a "basic attack" action. Circle around Sword is "Melee Basic Attack", while Circle around the Bow and Arrow is a "Ranged Basic Attack".
When a power says you may use a "Basic Attack", you can use either. When it says you may do a Melee Basic Attack, it must specifically be a Melee Basic Attack, not a Ranged Basic Attack.
The Opportunity Attack specifically grants a Melee Basic Attack, and your DM used a Ranged Basic Attack instead. That was not a correct ruling.
Furthermore, because Magic Missile is a "Ranged Attack" (without some exception from a feat or power), that in itself provokes an Attack of Opportunity. Even *IF* the Wizard could use Magic Missile as an Opportunity Attack (which he legally can't), then his Magic Missile would provoke an Opportunity Attack.
Now here's the fun part though... If the DM allowed him to use his ranged basic attack of Magic Missile on you for an Opportunity Attack, which in itself provokes another Opportunity Attack because it is ranged, YOU can't be the one to make the opportunity attack. This is because you can't make opportunity attacks (or take opportunity actions) on your own turn! However, someone else adjacent *could* an Opportunity Attack against them!
Hopefully they will use a Melee Basic Attack, like the rules say, or else they will just cause a chain reaction of Ranged Opportunity Attacks!
It's a good thing this situation isn't legal, or Wizard school's sparring rooms would be a mess!
This. Eloquently stated and explained.
