If my opponent used Lickilicky's "Selickt" attack, can I choose the option to discard from my hand if I have less than 3 cards in my hand?
If you have no cards in your hand, you must discard cards from your deck. But if you have at least 1 card in your hand, you can choose either option.
Source: Battle Styles FAQ; TPCi Rules Team (2021-03-18)

Relevant cards

Note: All applicable cards may not be listed below.
SWSH5_114
SWSH5_114