304 cards found matching energy cost is at least 4

Udyr, Wildman
Ultrasoft Poro
Unchecked Power
Undercover Agent
Undertitan
Vanguard Armory
Vanguard Attendant
Vanguard Sergeant
Vayne, Hunter
Vengeance
Vex, Apathetic
Vex, Cheerless
Vex, Mocking
Vicious Snapjaws
Vi, Hotheaded
Viktor, Innovator
Viktor, Leader
Vilemaw
Vi, Peacekeeper
Volibear, Furious
Volibear, Imposing
Voracious Gromp
Walking Roost
Warwick, Hunter