You choose a target for this spell as you cast it, but you don't choose a creature type until the spell resolves.
01-04-2008
wotc
Note that this spell counts the number of permanents you control of the chosen type, not just the number of creatures you control. It will also take your kindred permanents of the chosen type into account.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.