Traditional format, because I like Ancient Fairy Dragon.
Dual purpose strategy: Apex Avian lockdown, combined with a synchro engine. Ideally, find Divine Wind as fast as possible, and then turbo using Harpie Dancer/Speedroids. Apex Avian can infinitely trigger with Thunderbird on the field, effectively locking down the opponent's effects. Star Staring Starling and Harpie Oracle can be used in conjunction with Swallow's Nest to drop Apex Avian onto the field. Synchro Dragons are here to also trigger Oracle's level increase, as well as generally be boss monsters. Otherwise, I'm just running tech cards to see what works.