This is one of the most powerful effects in Magic history, as it lets you search for combo pieces or answer literally any threat
You cant really play this white enchantment in decks with more than two or three colors because those decks tend to cut basic lands for mana-fixing lands, but any deck with a healthy number of basics can easily exile a creature or planeswalker
Some of the things Vivien can set up are: Aurelia, the Warleader & Delina, Wild Mage Purphoros, God of the Forge & Saffi Eriksdotter Temur Sabertooth & Dockside Extortionist Loyal Retainers & Saffi Eriksdotter Pathbreaker Ibex & Urabrask, the Hidden Rionya & Combat Celebrant Avacyn, Angel of Hope & Serras Emissary Bruna & Gisela to build Brisela Thats honestly just scratching the surface
Beyond the raw power of the Equip 0 ability, the Paladin also provides repeatable card draw every time an Equipment enters the battlefield
That helps the accessibility, but I think the game came out, to some extent, a little more difficult than we wanted it to be