The Ravnica Allegiance Deck Builder's Toolkit is a box set that was released on January 25, 2019. It contains 100 basic land cards, 125 fixed cards suitable for improving the set's Planeswalker decks, and four 15-card booster packs (Dominaria, Core Set 2019, Guilds of Ravnica, and Ravnica Allegiance). You also get a deck builder’s guide with tips about building the best Magic decks, a Magic "learn to play" guide and a full-art reusable card storage box.
Like the Core Set 2019 Deck Builder's Toolkit before, all the cards (except for the cards in the boosters) in this product are entirely fixed, providing R&D full control over the experience and allowing them to plan out the deckbuilding options that players will find when looking to upgrade their Planeswalker Decks.
Each toolkit contains 100 basic lands and 125 other fixed cards.