The basement

when enters the battlefield exile every child on the battlefield. put 2 counters on the basement for each child exiled.
Every time a child enters the battlefield. put a counter on the basement.
Spicy Nerd gains next abilities from the basement
-3 counters vigilance
-5 counters doublestrike
-10 counters indestructable
{t}{3} gain x black mana for each child counter on the basement remove x amount of counters
{t}{b}
{t} create a child token