Apostle's Blessing

({W/P} can be paid with either {W} or 2 life.)
Target artifact or creature you control gains protection from artifacts or from the color of your choice until end of turn.

The List

Modern Masters 2015

({PW} can be paid with either {W} or 2 life.)
Target artifact or creature you control gains protection from artifacts or from the color of your choice until end of turn.

New Phyrexia

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.

Any Equipment attached to a creature that gains protection from artifacts will become unattached.

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 produce Phyrexian mana.

To calculate the mana value of a card with Phyrexian mana symbols in its cost, count each Phyrexian mana symbol as 1.

You choose the target as part of casting the spell. You choose what attribute the target gains protection from when the spell resolves.