The Pokmon Company will be working backwards through the series history, starting with the Galar region from the most recent Sword and Shield video games
Note: If my Thoughtseize is instead an Inquisition of Kozilek that cant hit Gifts Ungiven, I would likely cast it on Turn 1 in the hopes of cutting off their ability to put together a hand that supports Gifts Ungiven
Cunning Coyote is a strong and aggressive 2-drop that has utility even outside of turn 2
Similarly, if you control multiple Assemble the Players, each one has a different casting permission that may be used once each turn
He found himself with a new title, leadership of the Tuskeri, and a souvenir permanently lodged in his skull
Other than violently stripping your opponents lands, you could instead look at Flametongue Kavu, Pyrogoyf, Inferno Titan and the like, and play a lot of haste enablers