@arcanedarness  
Ah Fair then.

I had forgotten about Eldrazi Monument. It’s a good point. Eldrazy monument is considerably more overpowered (even if artifacts are slight easier to destroy because red). I withdraw my complaint, it’s a strong but not overpowered card.

@arcanedarness  
Then compare it to Eldrazi Monument. The Limitation on that is considerable, But its also colorless, it anthems and it gives evasion for your team on top of it being indestructible. Which is actually a closer to this card given that is basically how regenerate works. And you are ignoring the fact that everything else on it make that card really strong as well. But you’d be hard pressed to find someone that thinks ole mikey over there is overpowered. And neither is this card. If anything I’d argue its right on curve. It doesnt protect what is already around, Its got are fairly significant color req. 3B and 2BB are very different. And it makes your creatures a little harder to kill. But not very. Damnnation and Wrath of God come to mind. As do Path/Swords/etc. For a 4 mana do-nothing enchantment the upside is pretty sub-par.

@Rakdar
 
Yes, Mikaeus gave Undying, what is different from one regeneration per turn per creature.

@arcanedarness  
Its basically a third of Mikaeus, that doesnt anthem, doesnt make creatures bigger when it procs, and isnt on a 5/5 evasive body, and it doesnt punish players for attackign you. This card is fine. Now, I while i am a little rusty on the original FOE, but i think canterlot ghouls could regenerate infinitely unless they were disintegrated or beheaded. But infinite regeneration actually is broken at that cost. adding another effect and making it 1 more mana and then its fine. But yes, ruins of canterlot would be one of the most powerful lands in the game.

Now it’s any creature type. I still find this card broken, but much more balanced than the land. If it was only ponies, and the Pony type didn’t have any very broken creature, it could even be considered balanced.
 
@The Hittite
 
It would be weaker in the protection granted, but it would be stronger in the sense that it affect creatures that are already there (before playing the enchantment) and it would activate “enter the battlefield” effects again.
 
Anyway, if this card was meta, everyone would have ‘destroy target enchantment’ or removals with sacrifice/remove/‘can not be regenerated’ because half of the decks would use this card.

Not bad, and it’s always nice to see Puppy, but this can get hard to track. Maybe something like
 

 
Granted, it’s not quite as strong.

The reason for Wrath of God/Damnation, everyone.