Rather than casting or playing side A and transforming it into Side B, these cards let you choose whether to cast or play Side A or Side B
This enables you to have another Synchro material for a higher level Synchro, and can be spammed with "Level Eater" to further summon "Shooting Quasar Dragon" or similar monsters
I dont know if any additional details outside Bulbapedia really exist
The dimensions of a Pokmon card are important because they ensure compatibility with sleeves, binders, deck boxes, and tournament play
Serena SR from S11A Incandescent Arcana remains one of the most iconic trainer cards from the entire Sword & Shield era and at roughly $75 today, it sits far below its $300+ peak from 2022
Starscape Cleric Starscape Cleric works best when you offspring it for 5 mana, and you get two creatures that have the you gain life, they lose life ability. It can be two bats in one card, and double the amount of life draining