March of the sick

At the start of your turn, add one mana of any
color or type ({s} {c} etc.) or {e} in any
combination for every creature you control that
has 1 sickness counter. For every with 2 sickness counters deal 2 to all permanents with 1 or 3
sickness counters. For every with 3
sickness counters reset all the sickness counters
on it and give a sickness counter to all creatures your opponents control and 1 of your own.
On your opponents turn add a sickness counter to each each permanent you control the