Tenebral Loom

Whenever a creature you or an opponent
controls dies, put 1 charge counter on
Tenebral Loom.
{t}, Remove any number of charge counters from Tenebral Loom. Add {1} for each counter
removed. Mana created this way can only be used
to cast Instants or Sorceries.
"Fueling magic is an art. We are the weavers, and
they are the wool."