56 cards found matching color is red, energy cost is at least 3, type is unit

Lord Broadmane
Lucian, Gunslinger
Magma Wurm
Minotaur Reckoner
Noxus Hopeful
Noxus Saboteur
Perched Grimwyrm
Prepared Neophyte
Pyke, Dockside Butcher
Raging Firebrand
Raging Soul
Red Brambleback
Rek'Sai, Breacher
Rell, Magnetic
Rengar, Pouncing
Rengar, Unseen
Revna the Lorekeeper
Rumble, Hotheaded
Scorchclaw
Scrapyard Champion
Sentinel Adept
Sharkling
Tibbers
Towering Pairofant