(1) a nonvested property interest or a power of appointment becomes invalid under § 18-3-101;
(2) a class gift is not but might become invalid under § 18-3-101 and the time has arrived when the share of any class member is to take effect in possession or enjoyment; or
(3) a nonvested property interest that is not validated by § 18-3-101(a)(1) can vest but not within 90 years after its creation.