Generic negative effect-givers

There are a few generic negative effect-givers. These all have an identical pool of negative effects.

The generic negative effect-givers are:
 * Creepy Candy
 * Doom Doge

As of November 26th, 2019, all of the "negative effects" in the pool are:
 * 1 random Curse from the generic Lesser Curse-givers pool
 * Fire for 1 turn
 * Slow for 2 turns
 * Slowing Poison for 2 turns.
 * You move 10 spaces back.