Promotional items based on the formats you play during a given season (for example, drafters could get a phantom draft, Legacy players could get free entry into a Daily Event, and sure, Standard players could get a hot new card when appropriate)
Its ATK and DEF numbers change depending on the amount of LP you have at your disposal
If you're Aggressive-Deck Belle and they attack, your plan is to deal as much damage as possible as quickly as possibleso you'd prefer to try and get in 2 points of damage with your creature on your turn instead of trading off by blocking
Because it doesnt directly protect itself you need to put it in a shell that has a few creatures on defense
Forcing your opponent to weigh all those unknowns and potentially make wrong decisions can give you advantages that lead to victory
Japanese Magic cards can be worth more in certain cases, especially when the card has exclusive artwork, strong collector demand, or a special treatment that collectors prefer