234 cards found matching energy cost is at least 5

Targonian Visionary
Tasty Faefolk
The Harrowing
Thermo Beam
The Ruination
Thousand-Tailed Watcher
Tianna Crownguard
Tibbers
Time Warp
Towering Pairofant
Trove Golem
Tryndamere, Barbarian
Udyr, Wildman
Ultrasoft Poro
Unchecked Power
Undercover Agent
Undertitan
Vanguard Armory
Vanguard Attendant
Vex, Cheerless
Vex, Mocking
Vicious Snapjaws
Vilemaw
Vi, Peacekeeper