Apostle's Blessing — ruling 1

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.

Apostle's Blessing — ruling 2

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

Apostle's Blessing — ruling 3

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.

Apostle's Blessing — ruling 4

If you're at 1 life or less, you can't pay 2 life.

Apostle's Blessing — ruling 5

Phyrexian mana is not a new color. Players can't produce Phyrexian mana.

Apostle's Blessing — ruling 6

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

Apostle's Blessing — ruling 7

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

Apostle's Blessing : règles, fonctionnement et interactions (MTG)

Apostle's Blessing is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

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

How it works : Apostle's Blessing

Original English text — Wizards of the Coast / Scryfall

#1June 1, 2011· Wizards of the Coast
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.
No other card is named in this ruling.
#2June 1, 2011· Wizards of the Coast
To calculate the mana value of a card with Phyrexian mana symbols in its cost, count each Phyrexian mana symbol as 1.
No other card is named in this ruling.
#3June 1, 2011· Wizards of the Coast
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.
No other card is named in this ruling.
#4June 1, 2011· Wizards of the Coast
If you're at 1 life or less, you can't pay 2 life.
No other card is named in this ruling.
#5June 1, 2011· Wizards of the Coast
Phyrexian mana is not a new color. Players can't produce Phyrexian mana.
No other card is named in this ruling.
#6June 1, 2011· Wizards of the Coast
You choose the target as part of casting the spell. You choose what attribute the target gains protection from when the spell resolves.
No other card is named in this ruling.
#7June 1, 2011· Wizards of the Coast
Any Equipment attached to a creature that gains protection from artifacts will become unattached.
No other card is named in this ruling.