Ultra Ball costs 2 other cards from hand, discarded to search the deck for any Pokémon and reveal it into hand. The Brilliant Stars wording rephrased the effect as a usage condition, 'you can use this card only if you discard 2 other cards,' rather than the earlier instruction-then-search phrasing, without changing the underlying trade.
Ultra Ball first appeared in Dark Explorers in 2012 with art by 5ban Graphics. Ryo Ueda illustrated the Sun and Moon era prints, sadaji handled the Brilliant Stars Secret Rare, and Ayaka Yoshida and Studio Bora Inc. have illustrated the Scarlet and Violet and Mega Evolution era prints, including Ascended Heroes, while Yuka Morii illustrated the 30th Celebration printing. Ultra Ball has also reprinted steadily through Plasma Freeze, Plasma Blast, Flashfire, Roaring Skies, and Fates Collide during the Black and White and XY eras.
As of June 19, 2020, this card was banned in Hong Kong and Taiwan. The Ultra Ball is a type of Poké Ball in the games with an improved capture rate over the Great Ball. Amelicart illustrated the Crown Zenith printing, joining a run of illustrators that also includes 5ban Graphics, Ryo Ueda, sadaji, and Ayaka Yoshida across the card's history from Dark Explorers through the Mega Evolution era.
Dark Explorers printing is Ultra Ball's first appearance, illustrated by 5ban Graphics
Brilliant Stars printing introduces the reworded usage-condition text
Brilliant Stars printing also includes a Secret Rare treatment
Ascended Heroes printing includes an Ultra Rare treatment
30th Celebration printing brings in illustrator Yuka Morii
As of June 19, 2020, it was banned in Hong Kong and Taiwan.
It rephrased the discard cost as a condition for playing the card rather than a sequential discard-then-search instruction.
It is described as an improvement on the Great Ball's capture rate in the games.
From Dark Explorers (2012) · 6 printings
Discard 2 cards from your hand. (If you can’t discard 2 cards, you can’t play this card.) Search your deck for a Pokémon, reveal it, and put it into your hand. Shuffle your deck afterward.
From Sun & Moon (2017) · 3 printings
Discard 2 cards from your hand. If you do, search your deck for a Pokémon, reveal it, and put it into your hand. Then, shuffle your deck.
From Brilliant Stars (2022) · 8 printings
You can use this card only if you discard 2 other cards from your hand. Search your deck for a Pokémon, reveal it, and put it into your hand. Then, shuffle your deck.

Ultra Ball
Item
First printed in Dark Explorers (2012)
You can use this card only if you discard 2 other cards from your hand. Search your deck for a Pokémon, reveal it, and put it into your hand. Then, shuffle your deck.