Kalhan, Oathsworn of Justice

when Kalhan, Oathsworn of Justice enters the battlefield, if you cast it, put a shield counter on it
{t}: Prevent all damage that would be deal this
turn. at the end of the turn, Kalhan, Oathsworn
of Justice deal X damage to itself , where X is the
total damage prevented this turn
Divine Smite — {r}{w}: Kalhan, Oathsworn of
Justice gain +3/+0 and first strike, until the end
of turn