Continous Draft goes as follows:
- Open up your 3 boosters and choose 1 card that you will not be drafting. This will leave you with 44 cards as your draft pool
- find another player (or have the store pair you with someone)
- Mix up both draft pools to make a pile of 88 cards.
- Choose who goes first by rolling die
- First player takes top 4 cards from the pile and lay them so both of you can see them
- Then first player chooses 1 card he wants to his new draft pool
- After this from the 3 cards that are left the other player chooses 2 cards and adds them to his new draft pool
- The last card goes to first player.
- Then roles are reversed, and you continue until both players have drafted a new pile of 44 cards, you make an deck with the cards you drafted.
- After you play a match against the player you drafted with you take your new pool and start drafting again with the next person you pair with.
This makes you have a constantly changing draft pool and to not have a new deck for each game, the downside could be that it takes a while to keep drafting all the time.
Read more here:
https://mtg.gamepedia.com/Continuous_Draft
MTG blog 