Locking players out of half of all the spells in the game is hilarious, and changes everyone's entire game plan to I need to kill that Void Winnower. As long as you have enough odd-mana-valued spells to keep playing, this 9-mana monster should bring you close to ending the game right then and there
In Commander, everyone is playing powerful creatures, and the only thing better than playing your own powerful creature is taking one of your opponent's, and New Blood is a great new option for taking your opponent's best thing
Theme Boosters are available in English only
For example, compare this to Serra Avatar which can easily be a 40/40
Somehow, its gone 30 years without a reprint, which is wild for any card
You might have a Pez Dispenser worth a small fortune