The epics referred to are the PvP rewards that can be purchased by honor and marks. The phrase has been expanded to all Arena gear and even gear you can get from Badges. But really the most casual friendly gear and easiest to get at this time is the Arena Season 1 gear. You buy this gear at the Hall of Legends in Orgrimmar if you are Horde and the Champions' Hall in the Old Town section of Stormwind. There are weapons, armor, trinkets -- everything a player needs and all available in sets tailored for the different specs of each class. You purchase the gear with honor and marks from specific Battlegrounds.
Blizzard's extended plan seems to be to always give those of us with limited playtime access to Welfare Epics. When Arena Season 4 begins, the Season 1 gear will become unavailable and Season 2 will become purchasable with honor and marks. Don't hold off on getting the current epics, however. Season 4 won't be starting for a while yet.
If you mostly PvE in your limited playtime and take a look at these "welfare" prices, you may wonder why they are casual friendly. It may take some time to build up the honor and marks required for the pieces you want, but the fact is that honor and marks are attainable by everybody. In order to play the Battlegrounds, you don't have to belong to a guild or have any friends. No coordination is necessary (though it does help). Battlegrounds can be played at any time day or night without any prearranged time. You don't even have to be good at PvP or know the rules. You can just show up, get killed over and over and still earn enough honor and marks for one piece in just a few sessions.
If you are going for your easy purples, definitely do the Battleground Daily Quests. Anyone can pick them up as long as they are within the appropriate level range for the BG. The extra 400+ honor you get for completing this quest adds up pretty quickly.
I highly recommend putting in the BG time to get your Welfare Epics if you have limited playtime. And now that the map has changed for AV, the queues should be shorter for those Battlegroups that had Alliance boycotters. (The Alliance win a lot in the Cyclone Battlegroup, so I never experienced the long queues.) In general, you should spend your short play sessions having as much fun as possible. But if you are feeling undergeared, this is the quickest way to acquire epics.
Speaking of BGs, the Call to Arms this weekend is for Arathi Basin. That means you get your honor (about 21 at level 70) every 200 resource points instead of 330. Most people will be hanging out around Sunwell or checking out the changes in WSG and AV, so I don't know if the queues will be any shorter for those of you with queues. I'll be in AV, but that's what I do. Have fun!
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