skill [edit] Magic , like many other games, combines chance and skill
Since many rats care about the number of rats you have, cards like Pack Rat, Ogre Chitterlord and Vren, the Relentless are enablers and payoffs for the strategy, creating rats that grow in sequence with one another
Playing for keeps in a four-player game is probably a bad bet anyhow
You can only use them if you are doing a Limited event using Mystery Boosters, or are participating in one of the MagicCon Unknown Events that has its own unique playtest cards
You get a pretty good ability once you get your auras on the creature and flip it, and being able to move your auras around and dodge removal is pretty good
This, in turn, has led to a wide range of price spikes recently, with many cards skyrocketing thanks to insane scarcity