Riplakish Throne Dungeon

Defender, Shroud, Cumulative Upkeep {1}
{t}:Play a card in your library for free. Shuffle.
And he did erect him an exceedingly beautiful throne;
and he did build many prisons, and whoso would not
be subject unto taxes he did cast into prison; and
whoso was not able to pay taxes he did cast into
prison; and he did cause that they should labor continually for their support; and whoso refused to
labor he did cause to be put to death. -Ether 10:6