Rotation?

[Ptsgpbk]

What sets are still legal in standard now because I want to use a Kalonian hydra but am not sure if I can still use m14 cards

[TreeSmoker]

What sets are still legal in standard now because I want to use a Kalonian hydra but am not sure if I can still use m14 cards

You can use m14 until Kahns come out. I believe

When Kahns comes out we will lose rtr gc dm and m14

[particle]

What sets are still legal in standard now because I want to use a Kalonian hydra but am not sure if I can still use m14 cards

You can use m14 until Kahns come out. I believe

When Kahns comes out we will lose rtr gc dm and m14

the above is correct.
http://mtgtutorials.tumblr.com/post/74181359976/when-will-the-standard-format-renew-and-what-set-or