+Filth (5)
Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
Soulshift 5 (When this creature dies, you may return target Spirit card with converted mana cost 5 or less from your graveyard to your hand.)
Choose target creature. Put the top four cards of your library into your graveyard, then that creature gets -1/-1 until end of turn for each land card in your graveyard.
Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
As long as Filth is in your graveyard and you control a Swamp, creatures you control have swampwalk.
Whenever Filthy Cur is dealt damage, you lose that much life.
Until end of turn, lands you control gain "Sacrifice this land: Add ."