Paras

Whenever a creature deals combat damage to
Paras, detain that creature. (Until your next turn,
that permanent can't attack or block and its activated
abilities can't be activated.)
{p/g}, {t}: Tap target creature that is attacking or blocking, that creature does not untap during its controllers next untap step.
{p/g}{p/g}: The next time Paras deals X damage, it
gets +0/+X until end of turn.