While it does increase the resale value, especially for higher grades with modern cards, its great for encasing your card in a hard, protective shell - and for vintage cards, its important for verification
Created for a bit of silliness for a Userpage, so I've no real objections if it's deleted
When this creature leaves the battlefield, target opponent loses life equal to its power
I'll only discuss cards that inherently have flash, ignoring those that grant the keyword to other cards
Charizard 1st Edition Shadowless If Pikachu Illustrator is the rarest, the 1st Edition Shadowless Charizard is arguably the most iconic
For example, Arbok and Pidgeot is a fun deck which uses Pidgeots Ability to force an undesirable Pokemon into the active, one Arbok can keep there with Corner