ClickWoW command list
Private realms add server-side commands you type straight into chat with a leading full stop. ClickWoW keeps the list deliberately tiny — the realm exists to duel, not to spawn things.
Arena Battles windowNot a chat command. 1v1 is queued in the native Arena Battles interface: 1v1 Battle under Rated Battle, 1v1 Skirmish under Practice Battle, listed above the 2v2, 3v3 and 5v5 entries, which remain available.
/whoStandard client command. Fastest way to see who is online before you queue.
/playedStandard client command. Useful on an instant-80 realm because levelling time is zero and playtime is all PvP.
What is not available
Item, gold, teleport and level commands are game-master only. Everyone already starts at level 80 with a reusable Champion's Wardrobe starter loadout, with free Tier 9 PvE gear on a separate vendor, while Wrathful and ICC/RS Heroic items are bought individually with Arena Points — see the 1v1 arena guide for how matches actually get decided.