Nami, Strawhat Navigator

Whenever a land enters the battlefield under
your control, put a map counter on Nami,
Strawhat Navigator.
{w}{u}{b}{r}{g}, {t}: Search your library for a
legendary permanent with X converted mana
cost where X is equal to or less than the number
of map counters on Nami, Strawhat Navigator,
put that card onto the battlefield, then shuffle
your library.