So I just hit paragon with my hybrid paladin/fighter polearm fighter, and I took the hybrid feat again, and picked Combat Agility. I have rushing cleats on and have the Polearm Momentum feat as well as the Polearm Gamble feat.
My (and my DM's) question is, can they be used together?
Scenario: An enemy enters a square adjacent to me, triggering my Polearm Gamble. I hit him, push him 2 squares, and knock him prone. Can I then shift 1 square and hit him on the ground with the Combat Agility power? My initial thought would be no because you only get 1 opportunity action per round, but in all past versions Combat Agility granted extra OA's based off of your dex (my dex mod is 3), and in 4e it states that it triggers at the end of the enemy's action, so it's not an interrupt like Polearm Gamble's OA is. I've looked around online and I can't find anywhere that someone has asked about using these 2 powers together specifically.
Thanks in advance for any insights.