what is the most expensive pokemon card in evolving skies 12 Cards — Joseph Writer Anderson The Most Expensive Modern Pokemon

You'll note that nothing above mentions the ability about making prowess otter tokens, and that's because that part of the card is just fine

Honorable Mentions While these cards could fit into the category of fireballs, I ultimately decided to exclude them

(If they're equipped to the same creature, the abilities of the equipped creature will also trigger three times.) An ability of the equipped creature that triggers when a card is put into a graveyard "from anywhere" triggers twice only if (a) a creature card was put into a graveyard from the battlefield and (b) The Masamune is still on the battlefield and attached to the creature with the relevant ability

It's just for casual MTG

Really you want to convert dorks into cards, mana or damage and so this has very limited appeal