Majestic Naiad

{6}{p/u} Bestow, Hexproof & Convoke (Each creature you tap while paying reduces its cost
by {1} or by one mana of that creature's color)
Enchanted creature gets +4/+4 & Hexproof.
When this creature or the enchanted creature dies, you Take The Initiative & if you have completed the Undercity draw a card.