Symbios, Order Undone

Deathtouch
{b}{r}{g}: Put a plague counter on Symbios, Order Undone, then you lose 4 life for each plague
counter on Symbios. The next spell you cast this
turn gains infect and "As this spell is cast, deal
one damage to each opponent."
At the beginning of each end step, remove all
plague counters from Symbios.