Casterly Rock, Lion's Den

Casterly Rock, Lion's Den enters the battlefield
tapped.
{t}: Add {r}, {w} or {b}.
Cycling {3} ({3}, Discard this card: Draw a card.)
"I would let myself be consumed by maggots before
mocking the family name and making you heir to
Casterly Rock." ~ Tywin Lannister, to Tyrion