As the name suggests, this special increases the level of all creatures under your command by one.
It's a good idea to check if any of your creatures is about to level up. If your creature has nearly reached their next level, then train it to get that level and then use the special, because using this special will put the experience bar back to zero.
It takes more gold and time to reach the higher levels, so this special is more effective if you wait until your creatures have trained a bit first. It is advisable to let your Imps store it in your Library until it is ready for use.
| ||Increase Level / Locate Hidden World / Make Safe / Multiply Creatures / Resurrect Creature / Reveal Map / Steal Hero / Transfer Creature|
| ||Destroy Walls / Heal All / Increase Gold / Increase Level / Kill Creatures / Locate Hidden Land / Make Happy / Make Safe / Make Unhappy / Mana Boost / Receive Imps / Reveal Map / Stun Imps / Transfer Creature|