You should have 3 deals available atm. One of these deals doesn't have an expiration date and you can buy it for 5000 DMM Points. 10+1 roll and a 6* of your choice (ticket). It doesn't include the newest 6* so beware of that.

The other two Gachas:
Two new 5,000 DMM point gachas are available. One guarantees a 6* from 2015 (included in the 10+1 roll). The other guarantees a 6* from 2016 (included in the 10+1 roll).