Affinity for Birds (This spell costs less to cast for each Bird you control.)
When Bartz and Boko enters, each other Bird you control deals damage equal to its power to target creature an opponent controls.
Flood the board with Birds to cast Bartz and Boko cheaply, then leverage your wide flying army for combat damage while the ETB acts as repeatable removal. You ramp into a critical mass of Bird tokens and lords, blink or recast the commander to snipe blockers and threats, then swing for the win through the air.
Affinity for Birds makes the commander dirt cheap once your board develops
ETB doubles as flexible, scalable removal that can pick off multiple creatures with blink effects
Mono-green offers the best ramp in the format to outpace opponents
Flying tribal evades most ground-based blockers for fast clocks
Heavily board-dependent — a wrath sets you back to square one and makes the commander expensive again
Mono-green struggles with interaction, lacking counterspells and efficient spot removal outside combat
Niche Bird tribal pool means weaker synergy density than established green typals like Elves
No built-in card advantage engine without supporting pieces
Legendary Creature — Human Bird
less to cast for each Bird you control.)