Storm-Channeler Wurm

Trample
{u/r}{u/r}{u/r}, {t}: Choose Conduct or Expel.
Conduct- Storm-Channeler Wurm gains +1/+1 counters equal to the number
of Instant or Sorcery spells played this turn.
Expel- Storm-Channeler Wurm deals damage
to a target equal to the number of +1/+1 counters
on it and draws that many cards.
All +1/+1 counters on it are then destroyed.