Convoke (and other tap an untapped creature you control costs) are most common, but some decks can also harness affinity, improvise, sacrifice costs, conspire, and other creature-dependent discounts
You still get a great product if the booster boxes drawbacks dont dissuade you from grabbing one
The checklist card has a regular Magic back, and it looks like this: To use the checklist card, you must have the actual double-faced card
Remember to ask at your local game store and online communities, people may have unwanted tokens for a better price than the big online stores
That creature doesn't have to still be on the battlefield
This makes him a formidable presence when paired with other Villains in your deck