Every distinct wording since 2010, newest first.
September 24, 2021 · Innistrad: Midnight Hunt
When casting a spell bestowed, only its characteristics as modified by the bestow ability are evaluated to determine if it can be cast.
April 22, 2021 · Strixhaven
As a bestowed Aura spell begins resolving, if its target is illegal, it ceases to be bestowed and the effect making it an Aura spell ends. It continues resolving as a creature spell and will be put onto the battlefield under the control of the spell’s controller. This is an exception to rule 608.3a.