how to authenticate mtg cards

how to authenticate mtg cards a double-sided Magic: the Gathering card? I made this simple visual

Name: how to authenticate mtg cards a double-sided Magic: the Gathering card? I made this simple visual
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SKU: 93155501826

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Description

Ashnods Altar is a three mana Artifact that allows you to sacrifice a creature to gain two colorless mana

Archivist of Oghma The problem with Stax cards that prevent certain actions, like Aven Mindcensor, is that while you might get the drop on one player, from then on your opponents can play around your card until it's removed

it's just every main set released from August 2023 to now

Ill be adding this to my Glacian, Powerstone Engineer + Toggo, Goblin Weaponsmith deck as a way to punch through damage, and I can see other decks like Emry, Lurker of the Loch following suit over time