Masked Agent of Latreia

Masked Agent of Latreia can't be blocked.
{w}: Instant and sorcery you cast have lifelink this
turn.
{b}: Instant and sorcery you cast have deathtouch
this turn.
{w}{b}: You have protection to instant and sorcery
this turn.
{w/b}{w/b}{w/b}: You have protection to target creature.