Infect cards have seen a ton of play in various formats, mostly due to how Infect interacts with various creature pump effects
Examples are Battle of Wits (which requires a huge library to win the game) and Scapeshift (which requires playing enough Mountains to one-shot your opponent with Valakut triggers)
If were going Bracket 3, Im dropping Reanimator entirely, except for as a resource package to help us keep getting lands into play using the Boros BAE
Easy question until that 3/2 is a Kitchen Finks, then you might choose to block the 2/1 and face only 3 power of attackers the following turn rather than the four you would face if you trade with the first part of the Finks
Lets say, for example, that youre playing a Red and Black deck, and you find yourself in desperate need of a board wipe
If youre on tokens, you probably take the artifacts mentioned above first, and then you jam Tocasias Welcome and Welcoming Vampire, and a Bennie Bracks if you have one (I hope he keeps being reprinted!)