This is not only a really fun mechanic, it's also a decent rattlesnake, which is not something you see in red all the time
When it enters the battlefield, it exiles all graveyards and it makes sure that nothing is able to enter the graveyard again until it leaves the battlefield
The Eikons are pretty epic too, and when they Clash, you give Saga decks (or summons decks!) a removal spell that doubles up as a way to mess with lore counters
If you want to skip the activated ability some of the time, you can make excellent use out of the Summon cards from Final Fantasy
For my personal tastes, it lacks the nuance to really allow a strategy to be built around it and allow for a reasonable game of Commander to be played
How many will make the cut for the next year of Commander