custom pokemon card couple by BESTIA-Kustoms on DeviantArt Personalized PKM Anniversary Card, Custom

You can still play him in Commander, though, if you want all the other players to suffer flashbacks and then turn on you in fury

Gray Merchant of Asphodel: Affectionately known as Gary, the Merchant here is a good black win con, and while this deck isnt abusing him as many do its still a strong card

That's the pull that a card like this legendary Latios & Latias Tag Team has

If you have old-school dual lands like Tundra, Plateau, Volcanic Island, Sacred Foundry, Steam Vents, and Hallowed Fountain they would certainly tighten up your mana and make multiple Zedruu activations easier

Rares usually carry the most impactful abilities and make up the bulk of high-value singles on the secondary market

Ancient Tomb | Illustration by Howard Lyon In short, no, you dont necessarily need more lands for a 4-color commander or a 5-color deck