Caverns of El Dorado

Caverns of El Dorado enters the battlefield tapped

{t}: Add{c}{c}{c} to your mana pool
{4}: Draw a card
"Kulve Taroth's nesting ground—as yet undiscovered
is rumored to rest within the deepest region of the
caverns, from which tremendous geothermal energies
seem to emanate."-The Research Center