142 cards found matching energy cost is 3

Laurent Bladekeeper
LeBlanc, Fragmented
Lecturing Yordle
Legion Quartermaster
Lillia, Fae Fawn
Loyal Poro
Loyal Pup
Lucian, Gunslinger
Lucian, Merciless
Lunar Boon
Marching Orders
Mirror Image
Mistfall
Moonfall
Mosstomper
Nami, Headstrong
Nidalee, Cat Form
Nilah, Joyful Ascetic
Noxian Drummer
Noxus Saboteur
Pakaa Cub
Party Favors
Pickpocket
Pirate's Haven