It's very easy for Danny to pay for itself and play well with counter-moving cards
Item Cards Item cards can be played without a summoning cost, and stay in play throughout the game until they are used or another card or game rule removes them from play
Its especially dangerous because it resets graveyards, which can ruin strategies that rely on recursion
For Commander I like A Little Chat, Flawless Forgery, Xander's Pact, Audacious Swap, and might consider playing Grisly Sigil, Illicit Shipment, and Ob Nixilis, the Adversary in EDH
Neither of the two commons I overrated are unplayable, but they are generally unimportant
You can also grab a key 'walker such as Sarkhan Unbroken who is both awesome and may require the wrong colors and could not otherwise be cast right now