Common Good calls for you to create X tokens that are copies of target token you control
There are a similar number of important three-drops and higher-cost cards in Historic you might want to take, so you really need to keep an eye on the metagame to figure out which discard spell you want as your Thoughtseize overflow in Historic
EDHREC players, for example, run this pretty frequently in Tinybones, Trinket Thief, Tinybones, Bauble Burglar, and Tergrid, God of Fright, all commanders that excel leading decks that aim to whittle opponents down to zero resources as soon as possible
We will have to grant these new creatures haste, so we run the likes of Roar of Resistance, Mass Hysteria, Bitter Reunion and First Day of Class for turns where we want to pop off
It only takes one mana to transform it into a 1/1 Phyrexian Blinkmoth artifact creature with flying and infect
In Bracket 3, you only get three slots