Origins: Proving Grounds (OGS)
Origins: Proving Grounds Legends
-
Annie, Dark Child (Starter) 
#017 Champion Legend -
Master Yi, Wuju Bladesman (Starter) #019 Champion Legend -
Lux, Lady of Luminosity (Starter) #021 Champion Legend -
Garen, Might of Demacia (Starter) #023 Champion Legend
Origins: Proving Grounds champion units
-
Annie, Fiery 
#001 Champion Unit -
Master Yi, Meditative #004 Champion Unit -
Lux, Illuminated #006 Champion Unit -
Garen, Rugged #007 Champion Unit -
Master Yi, Honed #009 Champion Unit -
Annie, Stubborn #010 Champion Unit -
Garen, Commander #013 Champion Unit -
Lux, Crownguard #014 Champion Unit
Origins: Proving Grounds units and spells
-
Firestorm 
#002 Spell -
Incinerate 
#003 Spell -
Zephyr Sage #005 Unit -
Gentlemen's Duel #008 Spell -
Flash #011 Spell -
Blast of Power #012 Spell -
Recruit the Vanguard #015 Spell -
Vanguard Attendant #016 Unit -
Tibbers #018 Signature Unit -
Highlander #020 Signature Spell -
Final Spark #022 Signature Spell -
Decisive Strike #024 Signature Spell
Proving Grounds is the box set released alongside Origins, with preconstructed decks for learning the game. Its cards carry their own set code but play with the Origins card pool. 24 cards: 4 Legends, 11 units and 9 spells.
Champions in Origins: Proving Grounds: Annie, Garen, Lux, Master Yi.
Most valuable: Master Yi, Wuju Bladesman (Starter) ($20.59), Lux, Lady of Luminosity (Starter) ($11.61), Annie, Dark Child (Starter) ($8.00). TCGplayer market prices, updated daily.
Sealed product: Origins: Proving Grounds box set on TCGplayer.