Season of Discovery
The Battle for Ashenvale now has minimum and maximum times between battles. It will now never restart sooner than about 2 hours after its last start, and will not take longer than about 3 hours since its last start.
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Source: Battle for Ashenvale January 8th Hotfixes - Max Wait Between Battles, Quest Reputation Increased (https://www.wowhead.com/news=337066/battle-for-ashenvale-january-8th-hotfixes-max-wait-between-battles-quest)