Given the lack of fiscal restrain over the last decade, it does not take a big leap to assume the Legacy Fund will be raided in 2017, and that will be the legislature's first chance to get at the principal and earnings of the fund.
With a balance of over $3.2 billion from oil tax collections, the next legislature will have access to the interest and 15% of the fund with a 2/3rd vote of both the House and Senate. This will amount to roughly $450+ million.
If the money raided from the Legacy Fund is not spent outright, this will likely be used to replenish the Budget Stabilization fund once it is nearly drained to deal with the over-spending in 2015-17.