永劫の活力

警戒
あなたがコントロールしているすべてのクリーチャーは「{T}：好きな色１色のマナ１点を加える。」を持つ。
永劫の活力が死亡したとき、これがクリーチャーであった場合、これをオーナーのコントロール下で戦場に戻す。これはエンチャントである。（これはクリーチャーではない。）

Enduring Vitality

Vigilance
Creatures you control have "{T}: Add one mana of any color."
When Enduring Vitality dies, if it was a creature, return it to the battlefield under its owner's control. It's an enchantment. (It's not a creature.)

Duskmourn: House of Horror Promos

Duskmourn: House of Horror

Elk and Glimmer are both creature types. Enduring Vitality won't have those creature types when its last ability returns it to the battlefield because it won't be a creature.

A token that's a copy of Enduring Vitality won't return to the battlefield when its last ability resolves.

If a nontoken permanent that's a copy of Enduring Vitality dies while it's a creature, it will return to the battlefield as an enchantment when its last ability resolves. It won't have any card types other than enchantment.