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
All of that is speculative at this point
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

you may even find some with special anime-inspired art EXCLUSIVE SPECIAL TREATMENTSFound only in Collector Boosters, every pack contains at least 1 Extended-Art card and may even contain a special Confetti Foil Enchanting Tales card PLAY A GAME THAT FUSES ART, STORIES & STRATEGYMagic: The Gathering is a collectible card game that weaves deep strategy with art and mechanics that explore the themes of a particular world and storywhether you want to play a casual game with friends, collect cool cards, or get competitive, Magic welcomes you to The Gathering CONTENTS12 Wilds of Eldraine Collector Boosters, with 15 MTG cards in each pack Hot and fresh out of the oven, this batch of Collector Boosters is a feast fit for a royal
Cyclonic Rift (Return to Ravnica) Threats-be-gone Is there anything worse than staring down an army of creatures, artifacts, planewalkers and enchantments
Combined with all your permanents phasing out, Teferis Protection keeps you completely safe if things ever go bad