Not really tribal, as there aren’t any tribal support here. We just happen to have two Drakes with similar abilities available to us.
These two aren’t the only creatures that can benefit from instants and sorceries. We also have:
Plus a bunch of Wizard cards, but since they don’t work well together with the Drakes, I don’t see a reason to pay too much attention to them.
What spells should we use? Well, burn, removal, counters, Dive Down. Seems like a decent start.
There’s plenty of cards I wouldn’t really mind here, like Electromancer, but you have to keep the number of spells high enough.