If a unit is targeted by a kill effect like Harnessed Dragon, and the controller responds with Portal Rescue, does the kill effect still resolve since the unit was on the board when Portal Rescue resolved?

Ruling: No, the kill effect does not resolve. Units that leave the board stop being legal targets, so the kill effect fizzles when the unit is no longer present.

Nuances:

• Portal Rescue is an action, so it cannot be used to react to effects in the first place (it cannot interrupt resolution of other effects)