Loose Cannon can do guaranteed damage to your opponent before attacking. Impfinity Clone is fragile, but it can act as a Snorkel Zombie with the Imp and its given Mustache tribe. Mini-Ninja has the Anti-Hero trait, meaning he can do some good damage early in the match. However, all the other options you can get are decent early-game plays. Getting an Imp is the worst case scenario, as it does almost nothing, only serving as a meat shield or as a glass cannon if paired with Toxic Waste Imp or as extra cards with Imp Commander.
Imposter can be a great addition for Imp decks, as he gives you more Imps when he is destroyed. Ability streamlined: When destroyed: Add a 1 -cost Imp to your hand.It's IMPossible to tell who he really is. Ability: When destroyed: Conjure a 1 -cost Imp.