Razokae, Spirit of the Plague

Other creatures you control get +1/+0 and have
Plague. (Whenever this creature deals combat
damage to a player, put that many devastation
counters on that player. At the beginning of each
players upkeep, for each set of 5 devastation
counters on them,that player sacrifices a land and
loses a devastation counter.)
Plague, Afflict 5, Territorial (Whenever an
opponent sacrifices a land, put a +1/+1 counter on
this creature.)