Does Machoke's "Daunting Pose" Ability prevent my opponent's Decidueye GX's "Feather Arrow" Ability from placing damage counters on my benched Pokemon?
Yes it does. Decidueye GX can still use the ability against one of your benched Pokemon, but placing any damage counters would be blocked.
What happens if I try to use Chandelure's "Shady Move" Ability to move a damage counter from my Pokemon to one of my opponent's Pokemon while they have a Machoke with "Daunting Pose" Ability in play? And what happens if I try to move one of my opponent's damage counters from one Pokemon to one of their Benched Pokemon.
In both cases Shady Move would remove the damage counter from the first Pokemon, but the second Pokemon would not receive it because it is protected by Daunting Pose. If you try to move damage *to* something that blocks effects, the damage disappears; if you try to move damage *from* something that blocks effects, the damage stays there. But Daunting Pose only prevents putting damage counters ON your Benched Pokemon; it does not prevent taking damage counters OFF your Pokemon.
Source:
Guardians Rising FAQ (2017-04-22), TPCi Rules Team (2017-05-04)
