This clever loop transforms a simple artifact into a self-sustaining token engine, made possible because Jaheira, Friend of the Forest grants your tokens the ability to tap for green mana. When you activate Spawning Pit to produce a pair of Spawn artifact creature tokens, Parallel Lives steps in to double that output, ensuring you get four bodies instead of two. You can immediately tap two of those tokens for mana to fund the next cycle while sacrificing the others back into Spawning Pit to reload its charge counters. Meanwhile, Gimli's Reckless Might quietly watches over the board, giving your endless wave of creatures haste and turning every attack into a ferocious brawl if your total power reaches eight or greater.