To make the most of Pikachu EXs attack, its essential to have numerous Electric Pokemon in play on all your slots
They hide in dreams and whispers and faraway thoughts
However, the Darksteel version doesnt show an otter transmuting a fish skeleton into a magic sword like this one does
Virtue of Knowledge Listed at: $10 In Commander, Virtue of Knowledges enchantment side provides redundancy for Panharmonicon decks (and it's better, albeit more expensive: it works for any permanent entering the battlefield)
Snapcaster Mage is a powerful engine for blue decks that play instants and sorceries
I think if you modify a standard counters matters deck, which these colors do have a bunch of support for, into more of an artifact heavy shell, you can come up with something fun and unique