9 Urza, Lord High Artificer Blue mana is all about wizards and artifice, and Urza, Lord High Artificer is the ultimate blue creature in that regard
Crucially, it also spreads this protection to every other Dragon you control, making board wipes the only real option for dealing with your winged arsenal
Vampyre Folklore To recap, this deck is led by Clavileo, First of the BlessedClavileo, First of the Blessed, a 2/2 Vampire Cleric that turns an attacking Vampire into a Demon that creates a 4/3 flying token when it dies
He does so very very much and is just one mana
This singular card is the one that made me question the FlickerFlicker synergy criteria, because it doesn't have anything to do with that strategy, and yet it's an absurdly powerful card