Doc Sputnik, Radio Person

As long as Doc Sputnik is untapped, counter
all spells with mana value equal to its power.
{u}, {t}: Put a +1/+1 or a -1/-1 counter on Doc
Sputnik, Radio Person.
At the beginning of each opponent's upkeep,
that player reveals their hand unless they have
you draw a card and untap Doc Sputnik.