Cathedral Membrane

one generic mana one white mana or two life Artifact Creature — Phyrexian WallPower and toughness0/3

( one white mana or two life can be paid with either or 2 life.)

Defender

When this creature dies during combat, it deals 6 damage to each creature it blocked this combat.

Showing New Phyrexia#5

Price

0.20 $

Foil 1.72 $

10 printings

Daily estimate from Scryfall, not a shop quote.

2011-06-01
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.
2011-06-01
To calculate the mana value of a card with Phyrexian mana symbols in its cost, count each Phyrexian mana symbol as 1.
2011-06-01
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.
2011-06-01
If you're at 1 life or less, you can't pay 2 life.
2011-06-01
Phyrexian mana is not a new color. Players can't produce Phyrexian mana.
2011-06-01
Cathedral Membrane's ability will trigger no matter why it's put into a graveyard during the combat phase, not just because of combat damage.