Theyre printed with the same art, frame, set symbol, and collector number as when the card was first printed except with a planeswalker symbol in the lower-left corner , just like Mystery Booster cards
Each of these cards has its own set of pros and cons, and knowing which one has the best synergy with the rest of the cards in the deck is crucial to make it run properly
Chuck something big in your discard, then play Chip N Dale Recovery Rangers, Maleficent Monstrous Dragon, or Triton Champion of Atlantica to stay on theme
This time around, Amass Orcs is representing the vast Orcish armies of Sauron and Saruman within The Lord of the Rings universe, but it is essentially the exact same mechanic (and has been errata'd as such): Amass 1 would get you a 0/0 Zombie Army with one +1/+1 counter on it, Amass Orcs 1 would get you a 0/0 Orc Army with one +1/+1 counter on it, unless of course you did both, in which case you'd have a 0/0 Zombie Orc Army with two +1/+1 counters on it