Wild Cards

When purchasing a wild card for $500 or $250, there are a number of random outcomes you can receive:
 * Ouch (lose one heart)
 * Increased attack damage
 * Restore full health
 * Gain some movement speed
 * Gain a lot of movement speed
 * Lose some movement speed
 * Lose a lot of movement speed
 * Gain some attack speed
 * Gain a lot of attack speed
 * Lose some attack speed
 * Lose a lot of attack speed
 * Nothing happens
 * Gain a key