Da Wid of the Toxic Vapors

Menace
Venomous (This creature deals damage to creatures
in the form of -1/-1 counters and to players in the
form of Toxicity counters. If a player has a
Toxic counter, at the beginning of their upkeep, that
player loses 1 life per Toxic counter. These counters
empty after 1 use.)
"Be careful not to choke on your aspirations."-
Da Wid