mtg ink cards Ink-Treader Cantrips (Visual) you may put target creature card from that players graveyard onto the battlefield under your control. Alquist Proft, Master Sleuth (Showcase)

Any deck that needs a card advantage spell will benefit from seeing and selecting cards rather than relying on random chance

Its some decent protection against board sweepers, so thats something to be said for it, but I think you can do much better

On the other hand, Commanders from the Eternal Might precon seem firmly planted in another plane featured in Aetherdrift's story: Naktamun

In mono-green decks like Polukranos Reborn that are pip-heavy and plan to go wide, I can see it being a hilarious massive pump effect

Specifically, rule 608.2g says If an effect requires information from the game (such as the number of creatures on the battlefield), the answer is determined only once, when the effect is applied

The gemstone is a pentagon which leads to the number FIVE