Hello Steelwing,
Boots of Utter Darkness does not grant a mini Stealth.
If you have the Comprehensive Rules available, I would show your player the following section:
World of Warcraft® Miniatures Game Comprehensive Rules version 1.05:
708.4 Stealth is a triggered ability that creates an ongoing effect as it resolves:
At the start of this character’s turn, if it has no adjacent enemies, it is stealthed while it has this ability and doesn’t move more than 1 space this turn.
708.4a While a character is “stealthed,” it has physical power +1, and its enemies can’t play react abilities. During its turn, a character is stealthed as long as:
• It has stealth.
• At the start of this turn, it had stealth and there were no enemies adjacent to it.
• It hasn’t moved more than 1 space this turn.
A character needs stealth in order 'to become stealthed.' In addition to the above requirements, Boots of Utter Darkness allow a character 'become stealthed' if it started its turn adjacent to exactly 1 enemy character.
Ry Schueller
Organized Play Representative
Upper Deck Entertainment