Essentially, Bloodthirsty Conqueror is a replacement for Exquisite Blood in the classic combo involving Sanguine Bond
As such, anything that can get around that issue is pretty powerful
it was a huge accomplishment for me
This is because, unlike the packs you'll select afterwards, the cards you get from your very first booster pack are set depending on your choice between Charizard, Pikachu or Mewtwo
Can You Activate a Creature's Ability if it Has Summoning Sickness
But if you are behind a wall of creatures and not threatened, which is common in the later game, then you can rotate his +1 and -1 and over a few turns draws cards, gain life, and influence future combats in your favor