Some of my favorites are Crackle with Power, Jaya's Immolating Inferno, and Comet Storm
But once you get to a level of investment in shiny cardboard that it becomes financially impactful (Im also poor), its important to take statistical probability into account
Shalai and Hallar For our secondary commander we have Shalai and Hallar, a commander that costs 1RGW for a 3/3 body with flying and vigilance
It essentially lets you turn 3 mana into 4 ( plus tapping this land), but you have to target something thats able to attack, and actually get to attack
Since there are few ways to remove and return creatures to play in Rakdos (red/black), we're focusing on making copies
More than three times more creature cards than even Wizards, Humans are the most plentiful creature type in Magic