Rage Extractor
Artifact
( can be paid with either 
or 2 life.)
Whenever you cast a spell with 
in its mana cost, Rage Extractor deals damage equal to that spell's converted mana cost to any target.
New Phyrexia is an engine that both consumes and creates malice.
Illustrated by
New Phyrexia#91UncommonEnglishLegality
Rulings
A card with Phyrexian mana symbols in its mana cost is each color that appears in that mana cost, regardless of how that cost may have been paid.
To calculate the converted mana cost of a card with Phyrexian mana symbols in its cost, count each Phyrexian mana symbol as 1.
As you cast a spell or activate an activated ability with one or more Phyrexian mana symbols in its cost, you choose how to pay for each Phyrexian mana symbol at the same time you would choose modes or choose a value for X.
If you’re at 1 life or less, you can’t pay 2 life.
Phyrexian mana is not a new color. Players can’t add Phyrexian mana to their mana pools.
Rage Extractor’s ability checks for any spell you cast with any Phyrexian mana symbol in its mana cost, regardless of that symbol’s color or how the cost was paid.