Secure the Wastes shows Bashenga, the very first Black Panther back in the Bronze Age, while Karn's Skyscraper takes us all the way to the modernity of Wakanda
However, that goes both ways , and youre often receiving cards at a much lower rate than market value, so it all evens out in the end
One that could potentially cut down multiple players in a single turn if you start doubling-up on combats via Raiyuu, Storm's Edge, Combat Celebrant, and Response // Resurgence
Outside of removal, there's other powerful spells like the game-ender Exsanguinate, and the value engine Lingering Souls, both of which work well with Y'shtola's abilities due to being greater than mana value 3 when cast
But it's weird
There's certain things that trigger all the time, like Ghyrson Starn, Kelermorph, that love the damage boost