[問題]在關網看到的擴充範圍？？？

[江湖浪客路人甲]

擴充算法這專欄說一個環境是7年

可是官網卻這樣寫：

Extended Deck Construction
Updated June 20, 2011

The following card sets are permitted in Extended tournaments:

Lorwyn (until September 30, 2011)
Morningtide (until September 30, 2011)
Shadowmoor (until September 30, 2011)
Eventide (until September 30, 2011)
Shards of Alara
Conflux
Alara Reborn
Magic 2010
Zendikar
Worldwake
Rise of the Eldrazi
Magic 2011
Scars of Mirrodin
Mirrodin Besieged
New Phyrexia
Magic 2012 (effective July 15, 2011)
Innistrad (effective September 30, 2011)

今年的擴充應該是從拉尼卡開始算吧？感覺很奇妙...

連查牌網站都把拉尼卡跟時間漩渦退掉了