During your opponent's next turn, this Pokmon takes 20 less damage from attacks (after applying Weakness and Resistance)
Pair him with token doublers like Doubling Season or Parallel Lives and your board spirals out of control fast
It gets better the more freedom you have to cast and attack with your commander, and if you have a good start on ticking up your opponents poison counters
(It's also not an enchantment they can kill to get their dork back, by the way) But by discarding it for an effect, you net the effect as well as a powerful madness theft of something at instant speed that can change the tables very quickly
My favorite option though is to play Thousand-Year Storm, which copies each instant and sorcery for every other instant and sorcery you've already played that turn
This year in Canada, a Mew Victory Orb card, a First Edition Charizard and an Eevee promo card have sold for $26,500, $15,500 and $12,500, respectively