excavate cards from the top of your Deck, up to the number of cards your opponent controls, and if you do, add 1 of them to your hand, also, after that, place any remaining cards and 1 card from your hand on the bottom of the Deck in any order
In TCG, though, I think that theres a lot of merit to keeping closed decklists, as they favor innovation and reward game knowledge
You need to set it up, but you can also just naturally spike it off the top for an instant boardstate
UR Ultra Rare Golden Castle of Stromberg X SPELL Field Once per turn, during your Standby Phase, you must banish 10 cards from the top of your Deck face-down (this is not optional), or this card is destroyed
Imagine casting Fertile Footsteps with a few copy permanents kicking around every single turn