Like most powerful equipment cards, Animists strength lies in its simplicity
And then boom, one strike, and your party members HP goes to 0
Also, the land comes in untapped if you have one land or less in play which makes it decent in the early game
You dont know which other cards are coming your way in the draft and youre more likely to draft mediocre cards because your brain wants to make the multicolor card work if youre going to focus on a specific color combination way too early
Then at the beginning of your combat you can return, for free, a Pirate from your graveyard to the battlefield but you'll put a finality counter on it so if it would die, it gets exiled
Red spells (like Fireball) are known for dealing the most damage to opponents overall, so the Mox Ruby card can be invaluable for red spell users