Ruins of the Ancients

Whenever a creature leaves the battlefield, put a lore counter on Ruins of the Ancients.
Whenever a creature enters the battlefield, remove a lore counter from Ruins of the Ancients.
{1}{b}{b}, {t}, remove X loyalty counters from Ruins of the Ancients: Create a 0/0 Spirit creature token that enters the battlefield with X +1/+1 counters on it.