First strike (This creature deals combat damage before creatures without first strike.)
Lifelink (Damage dealt by this creature also causes you to gain that much life.)
Other Angels you control get +1/+1 and have lifelink.
Lyra is a mono-white Angel tribal commander that floods the board with flying lifelink beaters, anthems them, and wins through evasive combat damage backed by a mountain of life. Early turns ramp and protect, mid-game you deploy Angels and stax pieces, then close with a wide, hard-to-block, lifelinking sky army.
Cheap, repeatable mono-white ramp via Treasures and artifacts keeps Angels coming online
Lifelink across the whole team makes you nearly impossible to race or burn out
Flying evasion means your beaters connect through most ground-based boards
White excels at board wipes you survive better than opponents, and at protective pieces
Single-color means weak access to card advantage and ramp compared to other colors
Heavily reliant on the commander; losing Lyra repeatedly under high command tax stalls you
Vulnerable to mass removal, exile effects, and flyer-relevant sweepers
Limited interaction with the stack and combos compared to blue/black decks