Envious Lampad

{5}{p/b} Bestow, Dethrone & Convoke (Each creature you tap while paying reduces its cost
by {1} or by one mana of that creature's color)
Enchanted creature gets +3/+3 & Dethrone.
When this creature or the enchanted creature dies, you Take The Initiative & if you have completed the Undercity draw a card.