Cabal Graveyard

{t}:Add {b} for every Tomb Stone you control.
{t}: Create X Tomb Stone Tokens.(You may not
create more Tomb Stone tokens this way then Swamps
in play. X equals half the number of Swamps you
control rounded down.) Then create a Tomb Stone
Token.
{t} Sacrifice Three Tomb Stones: Shuffle Target creature into it's owners Library.
{t}, Sacrifice Five Tomb Stones: Create a Copy of
Cabal Graveyard, except the token isn't legendary.