So last night a dragon 20 ft. above us, swooped down, poison sprayed us, then flew 70 ft. in the air (which was said to be his movement speed).
Any opp. attack there?. We didnt get one
Dragons are tough, you don't want to meet them where they have the advantage.
This Truth belongs on a tee shirt.
How many feet did he swoop down? Anything less than 15 feet shouldn't have provoked Opportunity Attack unless one of you had a reach weapon of some sort.So last night a dragon 20 ft. above us, swooped down, poison sprayed us, then flew

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.