Look for cards like the Kodama of the Center Tree, the Enchant Creature Threads of Disloyalty, or the Legendary Creature Spirit Kira, Great Glass Spinner
This gives it extra utility that Approach and Biovisionary lack
Learning - It will happen some time that all 4 copies of the card you need are in the bottom 15 of a deck, larger decks can help simulate this and help a person learn how to come at problems in other ways when their deck doesn't cooperate
If you supplement your admittedly gelatinous Orzhov high end with a bunch of cheap one- and two-cost disruption and removal, you might just build yourself a little engine, one that can potentially help your deck win without having to attack
This artifact is also a fantastic engine because its both a payoff and enabler for the archetype
If youre playing the Final Fantasy Starter Decks, the games probably over