Kenki, the Wandering Mind

Prowess
Discard two Instant or Sorcery cards: Copy target Instant or Sorcery, you may choose new copies
for the target, activate this ability only once per
turn.
Counter target Instant or Sorcery you control:
Look at the top four cards of your library, you
may reveal one and put it into your hand, put the
rest onto the bottom of your library.