Think of an insult so vicious, so vulgar, that you hesitate to speak it aloud
You want to focus on big, impactful creatures that really shake up the board state upon entering the field, and who can continue to disrupt the game as long as they are on the field (or, possibly, by coming back from your Graveyard again, and again, and again) Protecting Yourself from an Early Grave, and Knowing Your Match-ups Reanimator decks also dip into forms of spot removal
Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owners control with a +1/+1 counter on it.) Note: The price of this product may fluctuate daily due to changes in market demand and consequently, the product is only available to order between the hours of 11:00 to 23:00 AEST
Its very difficult to remove, and drains your opponent for 2 when it dies (usually 4, including the creature that was sacrificed to pay the ward cost)
And as mentioned above, there are only two of the Wizards Commissioned Presentation Blastoise