Arne el ali

whenever arne el ali is leaving the battlefield rol a d20 if its higher than 15
arne el ali returns to the battlefield, if it's higher than 10 arne el ali returns
to the batttlefield with a -1/-1 counter
if it's higher than 5 return arne el ali to the battlefield with two -1/-1 counter
if it's 5 or lower do nothing