Roxxane, Dauntless Designer

You have no maximum hand size.
Roxxane's power is equal to the number of
card types among permanents you control.
{5}{u}{r}: Search your library for a permanent
card, reveal it, put it into your hand, then shuffle
your library. This ability costs {x} less to activate,
where X is Roxxane's power. Activate this ability
only once each turn.