Theres also the issue of purity for some people, too
First, its very consistent, using tons of token-makers like small bursts from Secrets of the Key and Big Score, then more consistent ones in Fable of the Mirror-Breaker and Shark Typhoon to produce Creativity fodder
7 Chea, Friend To Maybe Too Many Never Too Many Friends Grouping cards has been a popular thing in recent Magic sets, taking multiple creature or card types and uniting them under an umbrella term to easily reference them
The list weighs regional wins, sustained meta presence, and how hard Bandai had to restrict each archetype
On paper, its great
Some become creatures, others become enchantments, Invasion of New Phyrexia turns into a Planeswalker, and there are also some that become sorceries when exiled