For one, he offers instant removal of a creature, and later on can allow card draw and life damage to rivals
It is a one-mana legendary monkey pirate creature at 2/2 that, when it deals combat damage to an opposing player, creates a treasure token and exiles the top card of the defending player's library, and you can cast that card until the end of the turn
Blaine Deck This deck uses only cards obtained from Genetic Apex packs, and offers a powerful budget option for newer players
At the cost of only 3 mana, you can take out any creature, artifact, enchantment, planeswalker or land that annoys you
It is not the end of the world to cycle it for one life and one card if you have things you want to dig for and nothing else to spend the mana on and this is pretty much the worst case scenario