194 cards found matching energy cost is at least 5

Irelia, Fervent
Ivern, Friend to All
Ivern, Nurturer
Jae Medarda
Jaull-Fish
Jax, Unmatched
Jeweled Colossus
Jinx, Rebel
Kadregrin the Infernal
Kai'Sa, Evolutionary
Karma, Channeler
Katarina, Reckless
Kayn, Unleashed
Kha'Zix, Evolving Hunter
King's Edict
Lee Sin, Ascetic
Lee Sin, Centered
Leona, Zealot
Lillia, Protector of Dreams
Lord Broadmane
Lux, Illuminated
Machine Evangel
Maddened Marauder
Maduli the Gatekeeper