Brina, Humanty Guard

Brina, Humanity Guard has hexproof and indestructible as long as it's not your turn.
Brina's toughness is equal to the number of
humans on the battlefield.
Any player may assign Brina as a blocker as if
they control Brina.
{2}{w/u}{w/u}, {t}: Brina loses the hexproof ability until
the end of the turn and becomes the target of
target spell or ability. An opponent may activate
this ability by paying {3} in addition to its other
costs.