Before 2017, the only card that incentivized a Cat deck was Raksha Golden Cub and Kemba, Kha Regent if you squint
(Look at the top X cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) Once Lydia Frye has been blocked, increasing the blocking creature's power to 3 or greater won't cause Lydia Frye to become unblocked
That said, past Secret Lair variants of these cards commonly go for $30 and up, suggesting that these Commander super staples could easily pay for the price of entry
This card costs four mana, is instant and has bargain, which means you can sacrifice an artifact, enchantment or token as you cast it for a better effect
But it returned in 2003s Eighth Edition, two years before the others
It just so happens that the card is part of a subset of cards with their own set symbol and three letter code: Ragavan, Nimble Pilferer