It does require the creatures to be nontoken, but white has a decent amount of recursion, especially for cheap creatures with Sun Titan, Sevinnes Reclamation, and Raise the Past
At that point, Shifting Woodland can become a copy of Aftermath Analyst, allowing you to sacrifice and reanimate it and generate infinite mana and eventually infinite Mirrorpool and Hanweir Battlements activations to produce a horde of hasty attackers
The Red Menace Contained While Izzet Prowess was the best deck, Mono-Red Aggro was the formats gatekeeper, responsible for many of those dead by turn four games
Your Relentless Rats gets stronger the more copies of it you have in play, so if you have six Relentless Rats, each one of them is getting +5/+5, making them a three mana 7/7
[6] These restrictions are usually imposed for balance-of-power reasons but have been occasionally made because of gameplay mechanics