MTG Combo: Blowfly Infestation + Hapatra, Vizier of Poisons + Parallel Lives

Hapatra, Vizier of Poisons + Blowfly Infestation +Parallel Lives = infinite snake tokens

Essentially you would need some way to start the combo but Something that you target gets a -1 counter, hapatra triggers, make 2 snakes, the creature dies, -1 counter from Infestation targets one of the snakes, hapatra triggers, 2 snakes, creature dies, -1 counter and target the other snake.

You'll basically have 1 snake left over after the blowfly infestation trigger but that the way it'll work. Infinite snake tokens.