Damage Control X, where X is the number of cards your opponent put into his or her hand during his or her last build step
Each unit gets Backfire 2 when attacking Qin.
Keywords
Backfire
Backfire X: A cumulative ability triggered by the initial dice roll that means, "When you roll at least one natural three with this unit's attack dice before re-roll, this unit does X dice of damage to itself when the attack ends." Backfire applies only to dice rolled for an attack, not to dice rolls for abilities like Retaliate.
Damage Control
Damage Control X: A cumulative, triggered ability that means, "When your build step starts, you may remove up to X damage counters from this unit."
Cunning
Cunning: An isolated, static ability that means, "Roll this unit’s attack dice secretly. Show them to your opponent after damage prevention."