Sure, red has Warp World and Bazaar Trader effects to give away zombies, but without black, there arent many ways to help Daryl do more of his thing
for starters, it is protected by all card effects, so the only ways to get rid of it would have to be by battle or by tributing, and even then, it can be a big threat with 2500 (a lot of monsters might be able to get over that in the metagame, but in my personal opinion, this card grouped with Hidden Magician Form can be pretty nasty to deal with because you can use it to get this card out essentially for free if you go 2nd).not to mention that every turn it stays alive, you gain a huge chunk of lps back for every monster.on the field at that time
Secondly, you're going to want to have a good ratio of Pokemon to Trainers in each pack, so making sure you have enough room is also an issue
While it does nothing in the game itself, its a nice bonus for those that will make use of it elsewhere
This creature is very much equipped to support your mutating creatures, something fairly of note in green
Charizard, Blastoise, Venusaur, and many more of the most powerful Pokmon ever are on the prowl again