You can also just build this as a Rakdos mid-range pile that buffs your creatures
If you play it on Turn 1, your opponent either spends a removal spell on your one-mana 1/1, which pretty much guarantees youre trading up, or you get to untap and ramp into 4 available mana on Turn 3
That's more than a 3-1 ratio, with the larger category comprising slightly more than a third of the deck
But if you truly want to slow the game down to an absolute halt, add the following Humans: Grand Arbiter Augustin IV and Thalia, Guardian of Thraben
Thirsting Axe: The downside is really restrictive and I am not sure it is worth it, unless you meant to sacrific the creature anyway.
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