If you are a fan of Witcher and dont prefer the overall Hearthstone, and Magic The Gathering vibes, this is a good alternative
For Commander, it gets stronger the higher the power level gets since youre more likely to encounter free spells like Force of Will and non-land mana acceleration
But you get to cast the real one later for free, so the best pattern is to play a cheap spell first and a bigger one later, like a Time Warp or Stock Up
O-Kagachi, Vengeful Kami ( F, PF ) - This is a 6/6 for 5 that is free if you have Morophon, the Boundless
Koh, the Face Stealer Koh is one of the coolest designs in the set
It becomes an Angel in addition to its other types and gains flying