Eternal Magic (ANIME)

[Northern Sage]

 

 

Target 1 Continous Spell Card in your opponent's Graveyard; This card's effect became the same as that card.

 

Discuss.

[玄魔の王]

Now this is interesting... Bujin and Fire Fist (and to a lesser extent Fire Kings) all use Tenki, so this is a good side for them. Maybe in a Prophecy mirror for Star Hall, but that's pushing it.

[Toffee.]

Tenki-

Except if this card copies Tenki, you don't get to search, and just get the +100 ATK boost.
Think of this card like Phantom of Chaos; Sure you can copy Caius in your Graveyard, but you won't be able to do anything because Phantom was never Tribute Summoned.
This card works in a similar manner; You copy Tenki, but that Tenki effect was never directly activated, but you still get the +100 because that effect is continuous.

[玄魔の王]

I don't know that this works the same way, since both Tenki and Eternal activate, and when it resolves it gains the whole effect. Also, it can still copy Tensu.