Plagus, Ashnod's Disciple

Whenever another creature dies, add {2}. This
ability triggers only once each turn.
Whenever you put one or more counters on a creature an opponent controls, create a 2/2
black Phyrexian creature token. This ability
triggers only once each turn.
{2}, Pay 2 life: Put a -1/-1 counter on target
creature an opponent controls.