A creature with unleash can't block if it has any +1/+1 counter on it, not just one put on it by the unleash ability
Enchanting Tales was a sheet made of enchantment reprints, while The Big Score was a sheet made mostly of new cards that was repurposed from a planned small set in the same vein as March of the Machine: The Aftermath and its Epilogue boosters
When R&D hands off a file to editing, the card codes are always consecutive, but R&D has come up with a few two-digit codes that mean additional things
+2/+0 doesnt compete well against the other top-tier effects, but this doesnt cost mana to use and is black
They center around Jafar, Newly Crowned , however, don't be distracted purely by him
The premise is simple: give it a name, get a card