By doing this, you gain infinite combat phases, infinite combat damage, infinite Red mana (or infinite Green mana), and infinite untap of creatures you control
The catch-and-throw dynamic gives the card some personality, and seems pretty strong for Jeskais first true equipment commander
Her ability of creating a tapped Treasure token whenever an opponent draws a card not on their turn has obvious applications in cEDH, where the likes of Mystic RemoraMystic Remora and Rhystic StudyRhystic Study (amongst other more innocuous effects, such as Archivist of OghmaArchivist of Oghma, another just playable enough white two-drop creature) run wild on nearly every game
You can only play one land per turn, so if you cast more than one spell, you can't recover your mana base and fall back in advantage
There are only 40 game changers in total