It also means that its likely to be easier than ever to get into the format - ideal for anyone with friends looking for an on-ramp to Commander, or Magic in general
The player does not lose the same amount each time
It's just one step from adding Tarmogoyf to "Maybe I could play Siege Rhino, too..." and then suddenly this slippery slope doesn't look so much like an Elf deck anymore at all
It doesn't copy whether that creature is tapped or untapped, whether it has any counters on it or any Auras or Equipment attached to it, or any non-copy effects that have changed its types, color, power and toughness, and so on
No player may take any actions between the time you draw three cards and the time you finish casting free spells
Its had two reprints: Planechase (also forever ago) and most recently as a Mystery Booster retail foil