Allowing your opponent to mutate first and then using a kill spell is always at least a 2-for-1, maybe more
It gives you a fun win condition, and creates the sub game of drafting library manipulation to cast the second Approach quickly
Scarcity is a combination of 2 factors which always go hand-in-hand together = supply + demand You dont just look at pop (supply) and go, Too high pop, so its not scarce
Popularity: Popular Pokemon, like Charizard or Pikachu, may have higher demand and greater value
If this card is Special Summoned: Shuffle as many other monsters on the field as possible into the Deck, and if you do, this card's ATK becomes 1000 x the number of face-up monsters shuffled into the Deck this way, whose original Type was Zombie
In Seasons 3 and 4 of GX , Jaden's story is revealed to be darker and more complex than fans ever could have imagined