This was a card that I had great disdain for when I was playing blue red spells since it would usually kill my only creature: a Crackling Drake, and leave my opponent with more life to overcome as well as a big creature
For instance, if your opponent is playing an Elf Kindred deck, you simply choose Elf as the creature to target with Extinction and watch as all your opponent's creatures of that type are destroyed
Finally, pulling up in the last slot, is either an advertisement/token card, a minigame card, or a reprinted card from Magic: The Gathering history part of The List
And dont forget that you can always buy singles if you know exactly what you need
Lord of the Undead, like Brimaz, is also a little on the expensive side
For two generic and one red mana, Professional Face-Breaker is a 2/3 creature with Menace