Stealth does not get removed when the unit in Stealth attacks (unlike the trait Camouflage). If a unit with Stealth attacks thanks to Flank, or because it gained Stealth when it was already able to attack, it will remain in Stealth after the attack. Sneaky move!

Stealth prevents a unit from being targeted directly by the opponent's cards, but it doesn't prevent the unit from being affected certain Stratagems or abilities that either:

• Affect all troops or units (in one or both sides of the board)
• Affect a random troop or unit

Thus, an effect such as "Destroy a random enemy troop" could hit a troop in Stealth.