327 cards found matching energy cost is at least 4

Tricksy Tentacles
Trinity Force
Trove Golem
Tryndamere
Twisted Fate
Udyr
Ultrasoft Poro
Unchecked Power
Undercover Agent
Undertitan
Vanguard Armory
Vanguard Attendant
Vanguard Sergeant
Vayne
Vengeance
Vex
Vi
Vicious Snapjaws
Viktor
Vilemaw
Volibear
Voracious Gromp
Walking Roost
Warwick