Kenshin Uesugi, Undaunted

Creatures you control cannot be the target of or
be affected by planeswalker abilities an opponent
casts as long as you control Kenshin Uesugi.
If a creature you control would deal combat
damage to a planeswalker or an opponent, put
a +1/+1 counter on it.
{w}{u}, {t}, Remove a +1/+1 counter from target
creature you control. Counter target spell.