Kodrilak, Bringer of Disease

Whenever a player is dealt damage, they put a
disease counter on a creature they control.
Creatures with disease counters are 1/1 black
Horrors with no abilities except "At the
beginning of your upkeep, you lose 1 life."
At the beginning of your upkeep, you may
remove any number of counters from creatures
you don't control. For each counter removed this
way, scry 1.