Well, for one, it'll steal an opposing dork permanently as long as they are small enough
Flying, trample, haste Whenever this creature deals combat damage to a player, you create a Treasure token for each artifact that player controls
Many of the Elemental abilities could already target other creatures so sharing them didn't have a lot of impact
Additionally, depending on the price you get a sealed deck for, it may be cheaper than building your Kess, Dissident Mage deck from scratch, because it saves you from having to buy a $15 copy of your general
This allowed players to draft Rush of Knowledge quite highly, and splash it into many decks that otherwise wouldn't have had blue
Another benefit to consider is the number of coin flips this card generates each turn