Castle Everdark

When Castle Everdark is on the battlefield, you can’t play lands.
Castle Everdark enters the battlefield with 3 doom counters.
{t}: remove a doom counter and search your library for a swamp and put it into the battlefield, shuffle your library.
Pay 2 life: untap Castle Everdark
When Castle Everdark has no doom counters on it, you lose 4 life