Its just Yawgmoth's Will on a stick, a card already famous for being one of the best storm enablers in the game
Ramp, draw, removal, board wipes, protection
Finally, you can spend 9 loyalty to activate: If target player has fewer than nine poison counters, they get a number of poison counters equal to the difference. All you have to do then is add another poison counter somehow - say, by proliferating - and that opponent is dead
As good as they may seem on the surface, making a format successful likely cant be done overnight
Cards like Thornbite Staff, which untaps Krenko whenever a creature dies, can create an infinite loop with a sacrifice outlet like Skirk Prospector, generating infinite Goblins and infinite mana