Tireless Tribe is an aggressive Survival of the Fittest mirror-adjacent deck full of small creatures like Basking Rootwalla, Wild Mongrel, and Tireless Tribe itself, all with 1-2 toughness before pump, making Pyroclasm's 2 damage a strong sweeper against their board. We trim Krosan Reclamation, Battlefield Scrounger, and Triskelion, which are too slow to matter in a fast creature mirror. This is largely a Survival of the Fittest mirror where the player who assembles their engine and best silver bullets first wins, so sequence Pyroclasm to catch them overextended after a Call of the Herd or token wave.