Throne of Phyrexia

If you would pay mana of any color to cast a spell or activate an ability of a permanent you control, you may pay 2 life for each mana you would have spent instead.
If a creature you control dies while you are below 10 life, exile that creature, then create a 3/3 black Phyrexian creature token that is a copy of that creature, except it is an artifact in addition to its other types.