(1) A person having the right to designate the recipient of property transferable upon the occurrence of a future event may revocably nominate a custodian to receive the property for a minor beneficiary upon the occurrence of the event by naming the custodian followed in substance by the words: ". . . . . . as custodian for . . . . . . (name of minor) under the Washington uniform transfers to minors act." The nomination may name one or more persons as substitute custodians to whom the property shall be transferred, in the order named, if the first nominated custodian dies before the transfer or is unable, declines, or is ineligible to serve. The nomination may be made in a will, a trust, a deed, an instrument exercising a power of appointment, or in a writing designating a beneficiary of contractual rights which is registered with or delivered to the payor, issuer, or other obligor of the contractual rights. As an alternative to naming a specific person as custodian, the nomination may provide that the custodian may be designated by the legal representative of, or other person specified by, the person having the right to designate the recipient of the property described in this subsection. The person having the right of designation of the custodian is authorized to designate himself or herself as custodian, if he or she falls within the class of persons eligible to serve as custodian under RCW 11.114.090(1).