Blue Otters, Frogs, Birds, and Rats are based in blue mana, and bring with them all manner of spellslinging and flying strategies
Typically these are used in concert with discard effects in decks with heavy graveyard synergy as you will want specific things in the bin and wont be able to control whether you draw them or not
This card may drop over the short term, but its one of the best long-term casual rares in Dragons Maze
Another benefit of grading is protection, as most companies will send the Pokmon card back in a sealed slab of plastic
Ghalta, Stampede Tyrant The kind of card that makes a green player giddy, its more likely that the face commander is Ghalta, Primal Hunger, since power matters. Invasion of Ikoria This might be blacklisted as a too-complicated card for the introduction to the format, but a base price of $11 might be in the sweet spot