234 cards found matching energy cost is at least 5

Divine Judgment
Downwell
Drag Under
Draven, Audacious
Draven, Showboat
Dr. Mundo, Expert
Dunebreaker
Dune Drake
Eclipse Dragon
Eclipse Herald
Ekko, Recurrent
Elder Dragon
Eminent Benefactor
Endless Riches
Esteemed Hierophant
Fae Dragon
Falling Comet
Fate Weaver
Ferrous Forerunner
Final Spark
Firestorm
Forgotten Relic
Fretful Feline
Gangplank, Naval