It's a shame that the card itself merely generates a measly 1-2 mana to pay for your cumulative upkeep cards, which isn't going to matter much within a couple of turns
Why do the lands enter the battlefield untapped
Since gaining life is fairly irrelevant, it is better to amass a large amount of dogs, which means playing cats gives us the most value
You want to hit them and double the rest of your damage for the turn, which can come from burn spells or from non first strike creatures that attacked alongside Lightning
That said, these cards arent exactly common
Not only do you discard the two best spells from your opponents hand, but they also need to find a way to kill this creature, potentially drawing removal out of them, if they find it at all