Ability 1: Evasion: Can attempt to evade one attack per round. Evading has a success chance of 5% per stealth point. Uses all stealth points, regardless of success or failure.
Ability 2: Sneak Attack: Gains 2 damage per player attacking the same target. Can attempt a sneak attack that increases this damage to 4 per player with a 5% success chance per stealth point. Uses all stealth points, regardless of success or failure. (for the purposes of this ability, a minion or creature attacking a target counts as that minion or creature’s owner attacking the target).
Some example cards:
Ring of Invisibility (treasure):
Effect: Gain 1 stealth point per turn. At the end of your turn, if you have not dealt damage this turn, gain an additional 2 stealth points.
Equip: 1 Effect: deal 4 damage to an enemy. Flip a coin, if heads the triblade is unequipped. If tails, the triblade is destroyed.
Effect: May unequip to deal 2 damage. Generates 1 stealth point each time it is equipped.
Effect: Removes one Minor trap (up to 3 converted cost).
Effect: removes one Major Trap (up to 6 converted cost).
Effect: Instantly strike one opponent. Flip a coin. If heads, deal 4 + your normal damage. If tails, you deal your normal damage.
Effect: Whenever you are subject to an attack, flip a coin. If heads, the attack misses, if tails, it is resolved normally. Can be used in conjunction with Evasion.
Dirty Fighting (Instant)
Effect: Can only be played when an ally attacks. Grants the ally the ability to use the Rogue's Sneak Attack ability as if he had 5 stealth points (including the +2 to damage if another ally had attacked the enemy this turn). Does not exhaust the Rogue's stealth points.
Looking at these cards, and the play example, its clear that the rogue tries to stay alive in any way possible, and helps the party both through removal of traps, early looting of treasure (without lockpicking, the treasure wouldn't be available until after the encounter) and burst damage. The rogue suffers against opponents with high defenses, and can definitely use buffs and assistance whenever possible. If an ally doesn't attack, and the rogue is unbuffed, even with boosts to his attack, he may not get through tougher opponents. He will really start to shine later in the game, when he has some equipment and treasure to make up for these minor downfalls.