Lords of Hellas: Dice Tower Promo Artifact Cards

Components

7 PROMO Artifact cards (front text as listed below)
The PROMO Artifact card back, which carries one rule that applies to the whole deck

Printed on the back of every PROMO Artifact card:

Whenever you gain Monster or Common Artifact you may gain random PROMO Artifact instead.

Use in Battle instead of playing Combat card (you do not pass). Gain +1 Battle value/Army Strength.

Use when any player would have to roll the Monster die. Turn it on any side instead.

Use at the start of your turn. Place one chosen Hero in Region with your Hero.

Use at the start of your turn. Discard 1 Combat card to draw 2 Combat cards.

Use at the start of the Hunt or Battle. Draw 1 Combat card from the top of discard pile.

Use at the start of your turn. Discard 1 of your Blessings to gain 1 Priest.

Use at the start of your turn. Discard 1 Priest form your Priest Pool to gain 1 Random Blessing.

The card printing "Discard 1 Priest form your Priest Pool" reads "form" on the card; it is almost certainly a misprint of "from". It is transcribed here as printed.
The printed text does not state whether a used PROMO Artifact card is discarded or kept. Use the base Lords of Hellas rules for how Artifact cards are handled after use.
The card back rule ("Whenever you gain Monster or Common Artifact you may gain random PROMO Artifact instead") is printed on the back of each card, so it applies to the PROMO Artifact deck as a whole and is not tied to any one card.