Heraldic Imp

Notes:
 * Imps only drop an Imp Horn if its horn was broken.*
 * An Imp will use Frenetic Rip if its horn breaks.
 * The Imp will use an unmarked gesture to show that it has noticed the loss of it's horn, and will do the same gesture to recover it.
 * The Imp will recover it's horn after 1-3 Frenetic Rip.
 * Imps have high resistance to magic.
 * Imps have Conserve MP trait.
 * The Nyzul Isle versions are possible targets under the "Eliminate specified enemies" floor objective.