These rankings are not about defenders-matters or walls-matter
It's legal to cast such a spell with no targets, although this is rarely a good idea
Virtually every color has some kind of spell that spits out tokens, and there's plenty that are ETB creatures themselves
The three other colours have the best means to win games and give an additional pool of good cycling cards
Creature ramp: Solemn Simulacrum, Sakura-Tribe Elder, Wood Elves, etc
The cards in the center of the picture were the ones that were dehydrated and arched initiallythey had not yet rehydrated to flat but were quite close Cards at 72% were all some degree of cupped (almost the same, in fact), with the exception of the two cards I was rehydrating from the double-sleeved experiment