You don't even have to pay the convoke cost of a card
So many artifacts hit the board, such as mana producers (Sol Ring or Signets), land fetchers (Expedition Map and Armillary Sphere), utility artifacts (Nihil Spellbomb and Dispeller's Capsule), artifact creatures (Solemn Simulacrum and Steel Hellkite), broken artifacts (Mind's Eye and Eldrazi Monument) , and Equipment (Swords of X and Y and Lightning Greaves)
Still, Dritte aids in helping the consistency of the overall deck and its strategy to get tons of monsters in hand for later
Author and Magic creator Richard Garfield goes on to explain, in effect, how this means you should strategically choose multicolor decks
None of the cards themselves are super interesting, though, effect-wise or artwork wise