These two respective properties allow you to establish a strong early hold on the board
In Commander, you can only play one copy of each card in your decks (except for those whose text say otherwise, like Shadowborn Apostle and basic lands)
Viscerid Drone (Ice Age/Alliances) For all this talk of curve, first turn of creature threshold, and the such, I've not really mentioned Ice Age/Alliances
Now let turn to the best of the set for kitchen tables, specifically multiplayer formats like Commander and such
It feels for this reason like Skullclamp shouldn't be on the list but with the abundance of creatures and the effectiveness of the draw it can be used as an engine or as just a card draw effect in more decks than are able to use many of the cards on this list
The extended art on the promo makes this card so much more pleasing as it looks as if Oswald is properly pealing away the background to reveal the inside of the card