I'll only discuss cards that inherently have flash, ignoring those that grant the keyword to other cards
It does not, for example, change when you may activate abilities that can be activated "only as a sorcery." You may choose different new targets for each of the copies
Void is an ability that gives the card its on a bonus if a nonland permanent left the battlefield this turn or if a card was warped the turn, making this a better version of the Revolt mechanic from Aether Revolt
On iOS, the app is free to download, with optional premium features such as unlimited scans and deeper insights
Describing a gold Pokmon card is pretty simple
That being said, most of the card choices Ive used work in a pretty straightforward manner