Your future self (and wallet) will thank you
This means Final Fantasy will be entering the same format as cards from other releases that year, like Edge of Eternities, Aetherdrift, and Tarkir Dragonstorm
However, you can also learn a lot about how the game has changed just by tracing the rise and fall of various mechanics in old sets and by doing a some comparisons between old and new creatures
This is an amazing way of turning your opponents destructive power back onto themselves: The more they try and destroy Wind-Up Zenmaines, the more their own cards get destroyed by Zenmaines
Drowzee (Mega Rising) is not available in Regular Packs
If an opponent controls Elesh Norn, Grand Cenobite and you control Bard Class, your Ayula, Queen Among Bears and other two-toughness legendaries can safely enter the battlefield knowing they will have an extra +1/+1 counter added before Norns static debuff can snuff them out