
There are six choices, but I've condensed it down to three. First, I've combined instant and sorcery as both card types are identical from a creative standpoint. Plus, mechanically it's best to leave us the ability to modify spell speed as a tool to later fine tune the card. Second, I've eliminated artifacts, as the art does not support being an artifact. And third, I've eliminated land for the same reason. This leaves us with three options:
1. Creature
2. Enchantment
3. Instant or Sorcery
I went for #3...surprise?