Lavvear the Blessed Defender

{w}{b},{t}: Give target creature and Lavvear the
Blessed Defender +0/+1
{p/b}{p/b}{p/c}{p/c}: All creatures your opponent control
that arn't block deal no combat damage, as long as their power is X or lower, where X is the toughness of Lavvear the Blessed Defender. Then opponent chooses one unblocked creature. It deals damage to target player or planeswalker equal to its power.