pokemon card gible - SV38/SV94 Shiny Ultra Rare Shiny Vault Type Cynthia's Gible (Ball & Energy)

Not only that, but Sanctuary Warden also comes with the useful ability to remove a counter from another creature or planeswalker and create a 1/1 token as well as draw a card in exchange

Copying the +1 on Teferi, Temporal Archmage to untap extra permanents gives you huge mana swings, and copying the X from Tezzeret the Seeker can fetch multiple artifacts in one turn

Add in the fact that it has cycling itself, and you get a card that never feels dead in hand

They are great when you have interactions that require you do do two things at once, say discard and Shallow Grave in response to the reshuffle trigger

It's a nice place to store your cards if you plan on keeping them in one place and turning the pages with more care than you would an ancient text