In addition to the regular Standard format, IEL leagues and tournaments make use of two additional limited formats because of their ability to open the competitive game up to newer players.
- Commons (see analysis): Limited to basic and commons only. Similar to Pauper format, but also limited to Standard.
- C4 (see analysis): Commons format + 4 rare cards per deck.
For newer players making the transition from Commons to C4 or Standard, there are some cards that will make a bigger difference than others. These analyses are meant to help those players make the best use of their limited dust to create competitive decks in progressively more open formats.