Translated to MTG, and it can be relatively chumped somewhat safely, but it will never die in battle that way, at least not on its owner's turn
Notice that it's any permanent: You can bounce anything back to hand, from a scary attacker, a troublesome enchantment, or even some utility land
Or a good lock with Kaervek, the Spiteful
Your mana pool is the sum of all lands played throughout a game and is slowly built upon over the course of a game - as you are only allowed to play one land card per turn
But its a plenty powerful sacrifice outlet when you build around it
Destiny Spinner Outside of a dedicated Enchantment-Matters theme in your cube, Destiny Spinner falls flat, being both strangely oppressive and hilariously underwhelming