On the other hand, Commanders from the Eternal Might precon seem firmly planted in another plane featured in Aetherdrift's story: Naktamun
The gemstone is a pentagon which leads to the number FIVE
In fact, the Altar is so efficient and effective that it is featured in a staggering 2,585 combos on Commander Spellbook
Notably, these builds included just one new card from Foundations : Authority of the Consuls, which was tucked away in the sideboard
The only drawback is that its so fragile, and any removal spell this side of Shock will kill it
Its some decent protection against board sweepers, so thats something to be said for it, but I think you can do much better