Build: A minimum 40 card deck from cards pulled during the drafting phase.
Sealed Constructed
Needed: 6 draft packs from a single set
Build: A minimum 40 card deck with only cards pulled from your packs during the building phase. Typically includes a 15 card sideboard from your pulls.
Chaos Draft
Needed: 3 draft packs from different sets
Build: A miniumum 40 card deck from cards pulled during the drafting phase. Cards may or may not have synergy which is part of the fun!
Commander Draft
Needed: 3 packs from a Commander set.
Build: A 60 card minimum deck. Typically you will choose your Commander from among any Legendary creatures you pull and build around those colors. Commander is one of the most popular formats!