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Dragonair is surprisingly bulky, taking Blizzards from even Dewgong. Thus, it's not too difficult to find setup opportunities for this little demon. The main issue is Toxic use, which is more common than ever considering all the fires going around.
Mono Dragon is a nice defensive typing outside of the Ice weakness, gives this thing plenty of points of entry.
You're basically going to write this as like, "a beginner's guide to agiliwrap", since that's all this mon does. Go over how the game state changes once it sets up, the data you collect, and the damage it can deal to an opposing team.
Perhaps go over Moltres and Rapidash as potential partners in the second set comments paragraph, since both are nice late-game sweepers. Maybe Fearow.
It doesn't necessarily have to agility outright, since sometimes the opp will panic switch and take a TWave.