Cheapest priced copy (The Lost Caverns of Ixalan Commander): $0.69 at Card Kingdom, near mint, their price list as of .
Kindred Boon 
Enchantment · Rare · The List · #C17-5
As this enchantment enters, choose a creature type.
{1}{W}: Put a divinity counter on target creature you control of the chosen type.
Each creature you control with a divinity counter on it has indestructible.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
3 printings · $0.69 to $1.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2017 | 5 | Rare | $0.79 | — |
| The Lost Caverns of Ixalan Commander | 129 | Rare | $0.69 | — |
| The List | C17-5 | Rare | $1.79 | — |
5 rulings from Wizards of the Coast
- 25 August 2017If you somehow control a Kindred Boon with no chosen creature type, its activated ability can't be activated.
- 25 August 2017If a creature that isn't of the chosen type somehow gets a divinity counter on it, that creature will have indestructible.
- 25 August 2017If a creature has been dealt damage, that damage remains marked on it until the cleanup step. If a creature with a divinity counter on it has been dealt lethal damage, and later in the turn Kindred Boon leaves the battlefield or the counter is removed from that creature, that creature will be destroyed.
- 25 August 2017You can't choose multiple creature types, such as "Cat Warrior." A Cat Warrior is both a Cat and a Warrior. It's affected by anything that affects either type and unaffected by things that affect non-Cat or non-Warrior creatures.
- 25 August 2017You must choose an existing creature type, such as Vampire or Cat. Card types such as "artifact" can't be chosen.