Since Rainbow Rare cards are no longer being printed, you should focus your search on card sets released between the Sun and Moon series, released in 2017, and the Scarlet and Violet series, released in 2022
Cynthias Garchomp ex and Cynthias Roserade from Destined Rivals are gorgeous, and Cynthias Ambition from Crown Zenith is a fan-favorite for good reason
All trading cards within the PRB-02 set will be classified as Block Four, even though stand-alone sets dont typically fall under a specific block
The fact that it brings a spell with it is more than anything great in Limited
These cards are not tournament legal
Before Master Rules 5, you could activate the effect of Deneb in the OCG and also in the EU-TCG (Europe).9 However, in the US-TCG, if a card moves away from its activation location before its effect is activated, then its effect cannot be activated