Lets dive in
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
Ideally, it's an upgrade to what you've already gotten from the card
Right now, its clear that players and investors alike are expecting big things, but thats yet to be completely proven
To double a creature's power, that creature gets +X/+0, where X is that creature's power as Rule with an Even Hand's last ability resolves
Pro Tip : With a 57% gem mint rate (PSA/CGC 10), prioritize pack sealed raw copies in pristine condition (often found for ~$10 )