Magic Players,
Chris here, now that Guilds of Ravnica has been officially released, let's look at a card from the set that is seeing play in Modern.
Pelt Collector [Pelt] is a very unusual creature that can get bigger when another creature enters the battlefield under your control or if it dies assuming that creature's power is greater than Pelt.
How do you make the best use of this card?
For those that remember Vexing Devil [Devil], this was a card that was a punisher effect in the form of your opponent can either take 4 damage to have Devil's controller sacrifice it or not when it entered the battlefield.
In this situation, playing Pelt on turn 1 follow by a turn 2 Devil, which will trigger Pelt's ETB ability to making it a 2/2, in which makes the situation very awkward in that they can either have you sac the Devil in which it will cause Pelt's ability to trigger to making it a 3/3 in which that your opponent would take 7 damage in a single turn.
For those that remember Claim // Fame, this was another card also saw play within the Black/Red Claim // Fame burn deck that reanimate Devil from the graveyard.
For this type of deck that building around Pelt, you would generally want creature that are very good on its own in terms of Power/Toughness in which cards like Wild Nacatl can be as big as a 3/3 by turn 2. So by fitting this card into the deck archetype Zoo which is a type deck that uses efficient/fast creature that can deal a huge amount of damage by turn 2 or 3.
Because Zoo tends to have a greedy manabase in the form of shocklands, the deck can also play Death's Shadow to make Pelt bigger.
For now I will stop here.