If at least one creature in combat has first strike or double strike, you can activate Yuffie's ninjutsu ability during the first-strike combat damage step
Cryptic Command 3
So, the goal here, is to build around a gold spell so that we can cast things that have multiple colors to maximize this
To add a little flavor and keep from having two archetypes all about flying, the Set Design team decided it would be interesting to have many of the Birds mechanically care about non-fliers, creating this synergy where the deck wants a mix of fliers and non-fliers
Urtet, Remnant of Memnarch Essentially all Ive said in favor of Kenrith, the Returned King also applies to Urtet, Remnant of Memnarch, but it ultimately gets some extra points thanks to its support for the myr creature type
*Note: Probabilities don't sum to 100% due to rounding