Many cards might feature beautiful artwork, but that doesn't necessarily mean they're actually useful while playing the Pokmon Trading Card Game
Do you like extra turns in Commander
Cofagrigus needs to use the attack and have an ally on the bench, which is laden with damage counters, to justify using it at all
Put simply, shes a great engine, and it wont take long to ramp up to a point where youre using her for big spell discounts, especially since shes a three-cost card
Or, if you or a friend happen to own the intended card already, using that as a basis is a good idea
What makes it weaker than other epic spells is how specific your deck has to be built in order to actually ensure you can close games out once you cast Undying Flames