Saelaraxo, the Oathbreaker

Equipped creature gains +2/+0 and deathtouch.
Whenever equipped creature deals combat
damage to a player or a planeswalker that player
controls, unattach Saelaraxo, the Oathbreaker,
and transform it.
Equip {2}
From allegiances forsworn come tidings of the
apocalypse...