All of that is speculative at this point
In addition to giving you the option to switch your Active Pokmon with 1 of your Benched Pokmon, you have the option to instead have your Pokmons attacks to 30 more damage against Pokmon V (V, VMAX, VSTAR, and V-UNION) and Pokmon ex during the turn that Kieran is played
In most instances, itll do the same thing
It seems conceivable that he might have envisioned black having creatures that were hard to block in ways beyond swampwalk and fear
The first copy of Risk Factor is usually pretty easy to ignore and you just take the four damage instead of giving the opponent three cards, but with jump-start its usually pretty difficult to take another four damage and still survive the early pressure or other burn spells red decks can put together
So far, this type of card has only ever been up for public auction three times, while the most expensive (sitting pretty with a PSA 10) was last sold in 2020 for a solid $236.4K