With Ivy, you generally build it as a very different Voltron-style deck, casting a bunch of enchantments and single-target spells and turning them into two-for-ones by making sure you target someone other than Ivy
If all the other decks are making 1/1 mana elves or 2/1 beaters then doing either of those things is tempo neutral, making a 2/3 is tempo positive, while doing nothing is very tempo negative
Just imagine getting 4 to the face with your Sephiroth's Intervention
This forces fair, combat-focused games where kithkin excel at swarming and trading efficiently
Cards like Dragon Tempest, Blood-Chin Fanatic and Boltwing Marauder too often hinge on the emergence of a specific linear deck, whereas flexible and powerful cards like Snapcaster Mage and Abrupt Decay offer up multi-format appeal that can be tucked into a myriad of decks
Why are Charizard cards so expensive