This ingenious loop transforms Chainer, Dementia Master into a devastating reanimation engine by wrapping the battlefield in Mycosynth Lattice, which turns every permanent into an artifact and fuels Chainer's life-payment requirement with the steady stream of life from Angelic Chorus. You begin by sacrificing Su-Chi to Ashnod's Altar for two colorless mana, which then triggers Su-Chi's own death ability to generate four more colorless mana. That surplus mana and the life gained from Angelic Chorus easily cover Chainer's activation cost and life-loss penalty to bring Su-Chi right back from the graveyard, setting up an endless cycle that yields infinite mana, life, and sacrifices.