Xylar, Grave Sower

Each creature you control with a spore counter
on it is a Fungus in addition to its other types.
Sacrifice a Fungus: Each opponent loses X life,
where X is the number of spore counters on the sacrificed creature.
{t}, Exile target creature card from a graveyard:
You get a spore counter, then put a spore
counter on each creature you control.