Well, it's because you can easily slot a few Mutavaults into your list - an MTG land that can become all creature types - to supercharge the card
Theres also a little guy who gets really big
P/T Set Number 504 Language Deutsch Legal Formats Alchemy, Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Standard, Timeless, Vintage Rulings (6/6/2025) Finality counters work on any permanent, not only creatures
Granted, they're a very distinguished-looking rodent
Blue: Blue is my most played color in Lord of the Rings draft, and I think its very good, but key is that outside of Pelargir Survivor, every common creature is bad and almost all of the instants and sorceries are good
Kor Firewalker Kor Firewalker fits into this list thanks to its utility in formats like Duel Commander more than its utility in EDH