The reason theyre so much like Goblins is that classic Orcs ARE Goblins and it wasnt until 1977 when Dungeons and Dragons decided they were different
Becketts grading standards for their Pristine and Black Label 10s are a step higher than PSAs 10 grade, with the main difference being the four sub-grades from Beckett that add an additional layer of perfection your card can achieve
RESEARCH, RESEARCH, RESEARCH
It's a desert that enter tapped (booo!), taps for any color of mana a land you control could produce, and by paying 3 mana, it becomes an X/X Plant creature with reach until end of turn, where X is the highest mana value among your Commanders
Abeyance (T1, Ext, S, Block) Almost strictly better than Orim's Chant, as it allows you to draw a card plus shut down another deck on your opponent's turn if need be
If X is four, for example, then Sphinx's Revelation will have a CMC of 7 when it is cast that way