As well as having unique artwork based on the shiny Pokmons alternative appearances, Shining Pokmon cards have different attacks and stats compared to their standard forms
For example, if you control two Cursed Wombats, each with no +1/+1 counters on them, and you activate the adapt ability of one of those Cursed Wombats, you'll put two +1/+1 counters on that Cursed Wombat, and then each of its granted triggered abilities will trigger
It's a 3-CMC (2 generic, 1 Green) enchantment that allows you to exile a creature you control to add X mana of any one color, where X is the creature's mana cost + 1
Many Samurai in the set have vigilance, allowing them to attack without tapping, which makes them available for blocking the next turn
The colossal Machina army is back with vengeance in Structure Deck: Mechanized Madness
It depends on the specific card