Cauldron

Pay five life: Put a charge counter on Cauldron.
Sacrifice a creature: Put a charge counter on
Cauldron.
Exile three target cards from your graveyard: Put
a charge counter on Cauldron.
Discard a card: Put a charge counter on
Cauldron.
{t}, Remove two charge counters from Cauldron:
You may pay {0} instead of the cost to activate an ability of an enchantment this turn.