History of CR 702.102c
Every distinct wording since 2010, newest first.
April 22, 2021 · Strixhaven
The total cost of a fused split spell includes the mana cost of each half.
January 24, 2020 · Theros Beyond Death
When casting a spell bestowed, only its characteristics as modified by the bestow ability are evaluated to determine if it can be cast.
July 17, 2015 · Magic Origins
The check for whether a spell can legally be cast happens after its controller has chosen whether to pay its bestow cost; see rule 601.2e.
February 1, 2014 · Born of the Gods
A spell’s controller can’t choose to pay its bestow cost unless that player can choose a legal target for that spell after it becomes an Aura spell.
September 27, 2013 · Theros
A spell's controller can't choose to pay its bestow cost unless that player can choose a legal target for that spell after it becomes an Aura spell.
February 1, 2010 · Worldwake
rule 702.102c not present in this release