Shadow of tangled darkness

whenever a player spend black mana, you may
pay twice that life: Shadow of tangled darkness
gets +X/+0 where X is tha amount of black mana
spent, if a creature that received damage from it
dies this turn put a number of +1/+1 counter n it
equal to its power
I fear no men, but this thing... this scares me
-ArashiKun, Lost Child