The cards are shuffled face down when you go to pick a card, so it is purely random on which card of the 5 you will get
Sandaconda's first attack, however, requires 1 Fighting-type energy and deals 30 damage
Both attributes must be excluded to fully use the effect, but unlike Chaos, if you just want to summon, you can use one attribute, and recent themes often have fixed attributes, so this condition is easy to use
As a tournament-issued rarity, it sits at the top of the prestige pyramid, joined by staples like a 1999 Base Set 1st Edition Holo Blastoise and a factory-sealed 1996 Japanese Base Set booster box
check out the white and red spoiler discussions if you need to get up to date
While the Rainbow Secret Rare style was a hallmark of the best sets in the Sun & Moon era, its fundamental change to the card makes it a divisive rarity, thus leading to price dips or rises, depending on how the rainbow pattern works with the Pokemon