Abilities » Dew Guard | Trainers » Sordward & Shielbert
If my opponent has Milotic with "Dew Guard" Ability is in play, what happens if I play Sordward & Shielbert from my hand?
Since the opponent cannot answer the question due to the effect of Dew Guard, Sordward & Shielbert fizzles and nothing happens.
Source: TPCi Rules Team (2022-11-10)
Abilities » Dew Guard | Trainers » Riley
If I have Milotic with "Dew Guard" Ability in play, what happens if my opponent plays Riley?
Your opponent reveals the top 5 cards of their deck but you would not choose 2 cards, and they get to put all 5 cards into their hand.
Source: TPCi Rules Team (2022-09-29)
Trainers » Choy | Abilities » Dew Guard
If I have Milotic with "Dew Guard" Ability in play, what happens if my opponent plays Choy?
Dew Guard prevents you from revealing your hand, but your opponent still reveals their hand and draws 3 cards.
Source: TPCi Rules Team (2022-09-29)
Trainers » Avery | Abilities » Dew Guard
If I have Milotic with the "Dew Guard" Ability in play and my opponent plays Avery, do I have to discard Pokemon from my bench until I have 3 or not?
Milotic's Dew Guard prevents all effects of your opponent's Supporters that are done to you, so you would not discard any Pokemon from your bench for the second part of Avery.
Source: TPCi Rules Team (2021-09-09)
Abilities » Dew Guard
Does Milotic's "Dew Guard" Ability prevent Supporter cards from removing Tools or Energy from my Pokemon?
No, Pokemon in play are not part of "you or your hand". But it will prevent your opponent from using something like Marnie to make you put your hand on the bottom of your deck and draw a new hand.
Source: Evolving Skies FAQ; TPCi Rules Team (2021-08-26)