Bloomburrow's squirrel-themed Commander deck, Squirreled Away, is known to do much the same
My choice for 2004 is 2005 Sets : Betrayers of Kamigawa , Saviors of Kamigawa , and Ravnica: City of Guilds My Pick : Patron of the Orochi ( Betrayers of Kamigawa ) The rest of the Champions of Kamigawa block continued the theme of connecting creature types to mechanics
The White Flare set has some really solid options if you havent explored it yet, and Vanillite, Vanillish, and Oshawott together would make a great binder page
Additionally, for seven mana, you can simply copy an instant or sorcery you control, which will of course give you the extra copy as well
For each creature you control of the chosen type, create a token that's a copy of that creature