The Many Flavors of Modern Infect

I have been playing Infect decks for eight years now and it has never been more interesting or confusing. It has not been Tier 1 since the Gitaxian Probe ban but that may be set to change. New cards from War of the Spark and Modern Horizons are shaking the archetype up. Today I would like to take a look at the five flavors of Modern Infect.