The angels had vowed to protect New Capenna. She was determined to uphold that vow, no matter the cost.

Seraph of New Capenna

Flying
{4}{B/P}: Transform Seraph of New Capenna. Activate only as a sorcery. ({B/P} can be paid with either {B} or 2 life.)

With her Halo reserves exhausted, she began to change, and she made a new promise to bless New Capenna with glistening perfection.

Seraph of New Phyrexia

Flying
Whenever Seraph of New Phyrexia attacks, you may sacrifice another creature or artifact. If you do, Seraph of New Phyrexia gets +2/+1 until end of turn.

Seraph of New Capenna // Seraph of New Phyrexia

Flying
{4}{B/P}: Transform Seraph of New Capenna. Activate only as a sorcery. ({B/P} can be paid with either {B} or 2 life.) 

 Flying
Whenever Seraph of New Phyrexia attacks, you may sacrifice another creature or artifact. If you do, Seraph of New Phyrexia gets +2/+1 until end of turn.

Seraph of New Capenna // Seraph of New Phyrexia

Creature — Angel Soldier // Creature — Phyrexian Angel