Welcome to the Machine

Each creature is a colorless artifact in additition
to its other colors and types. Whenever an artifact
creature dies, it's controller gains {e}.
{e}{e}: Activated abilities of creatures you control
cost up to {2} less to activate until end of turn.
This effect can't reduce the amount of mana an
ability costs to activate to less than one mana.
{e}: Add one mana of any color. Any player may
active this ability.