The Great Uncle Istvan

If a creature would deal damage to you or The
Great Uncle Istvan, prevent that damage or gain control of that creature.
{w}{b}{r}, {t}: Creatures target player controls
attack you this turn if able. Until end of turn,
they gain, "{t}: This creature deals damage equal
to its power to you."
This old hermit has be driven insane by solitude, so he captures people for company.