Mephisto, Lord of Hatred

{t}, Exert Mephisto: Deal X damage to up to X
target creatures, where X is the number of lightning
counters on Mephisto.

Whenever Mephisto attacks place X lightning
counters on Mephisto equal to its power.

Mephisto gets +1/+0 equal to the amount of
lightning counters on Mpehisto.