How to proxy Secret Lair art without being That Player ProxyKing exists in the real world, where people play casual Commander, test decks, protect expensive cards, and also occasionally show up with something that looks like it came from a parallel universe called I have no self-control. If you want to proxy the Magic: The Baseballing look, heres the responsible way to do it

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You gain no additional value from casting one before the other or by having them on the battlefield at the same time
it also stops you adding colored auras and equipments, meaning its not quite as hot in a Voltron deck
There's no real depth of lore behind it, its a way for players to slap down their Fortnite-ass custom buildings and craft their way to victory