Extra Life 2021 included children's drawings of Craterhoof Behemoth, Mulldrifter, and Metalwork Colossus, with Questing Phelddagrif as a bonus card
The -3 is really good because permanent can mean many types of cards
It turns those 1/1 goblin tokens into mana when you need it, allowing you to ramp out your big threats or have multiple plays on a single turn
And with Menace, you also have a creature that can sneak through defenses to get in some damage and activate abilities that require something to be unblocked
A monocolored card is exactly one of white, blue, black, red, or green and no other colors
Its difficult to target thanks to the ward ability and will produce a powerful army of orcs on its own, which is a focus of Sauron, the Dark Lord in Commander