If your deck needs something that attacks and maybe holds some decent equipment, this is an excellent, fun option
This is a full set of the 4 Brawl Decks.
If it's a land card, create a Treasure token
In 2019, I snagged one of the first Secret Lair sets, Kaleidoscope Killers, which featured amazing art by Justine Jones on three five-color legends, including The Ur-Dragon
The only exception will be what I am calling the "Nadu contingency," which is if a new or unbanned card begins to become generally reviled and people just want it gone as soon as possible, we can break that seal and act earlier
Its easy to draw a disfigured and rotting zombie, but the dead gaze is done perfectly and the discoloration in his nails and the cracked staff show an overwhelming attention to detail