It may use serifs, be a different color from black, or contain lower-case letters
You are allowed to continue playing cards as long as you are still on your side of the Memory Gauge and have the memory left to play them, and if you don't want to play anymore cards whilst still having memory you pass the rest of your turn setting your opponent's gauge to 3 so you never have no memory to use in any particular turn
Jund: With Jund, you have two main options: first, you can embrace the ramp theme, improve the finishers, and play a good-stuff / ramp deck
Professor Onyx (#083) Artist Proof from $50.00 Artist Proofs are not signed unless a signature is added
At the end of the day, common sense really does go a long way
The set features new cards that generically support every color, like the powerful Scrambles, reprints of powerhouse cards like DeathXmon and ShineGreymon: Ruin Mode, and some Regional-exclusive cards from Event Pack 7