relentless gravewalker

intensify 2 (every time this card enters the
battle field, put 2 +1/+1 counters on this
card or gain 2 life)
{t}:add 3 black ({b}) mana to your mana
pool and put relentless gravewalker into
your gravyard untill end of turn.
if relentless gravewalker is in your
graveyard durring your untap faze, return
it to the battlefield untabed.