I'll analyze Mystic Forge combo performance with and without Defense Grid in Legacy over the last 4 months.
In Legacy over the last 4 months, Mystic Forge combo shows a notable performance improvement with Defense Grid. Decks running Defense Grid achieved a 55.1% winrate (190-155 record) across 78 entries, compared to 50.6% (316-308) for the 146 entries without it. This 4.5 percentage point improvement suggests Defense Grid provides meaningful protection against interaction.
The optimal configuration appears to be 2 copies of Defense Grid, which posted the strongest 59.3% winrate (89-61 record) across 36 entries. Running 3-4 copies shows diminishing returns, with 4 copies actually performing worse at 51.6% winrate, likely due to drawing too many copies or diluting the combo density.
The data indicates Defense Grid serves as effective hate against counterspell-heavy matchups while not significantly impacting the combo's consistency. The 35% adoption rate (78 of 224 total entries) suggests many pilots are already incorporating this technology, with 2 copies being the sweet spot for balancing protection and combo pieces.
Sources: Data from 160 Legacy tournaments: 56.9% MTGO, 43.1% Melee
https://melee.gg/Decklist/View/d557459a-dc5c-4151-a69c-b3570101c9f4
https://www.mtgo.com/decklist/legacy-challenge-32-2025-09-1412814291
https://melee.gg/Decklist/View/4b7f68e5-8124-4ec7-a8ac-b358000a5f02
I'll find Legacy tournament entries with Mystic Forge and Defense Grid after August 1st, showing player details and records.
Let me check what Defense Grid entries exist in the database and verify the card name:
Now let me search more broadly for recent Legacy entries with both cards:
Here are the Legacy tournament entries with both Mystic Forge and Defense Grid since August 1st:
Recent Mystic Forge + Defense Grid Entries:
Selfeisek is clearly the primary pilot of this configuration, with 9 of the 12 entries. The deck shows mixed results with notable highs like the 6-1-2 finish on August 9th and several 3-2 records.
Sources: Data from MTGO Legacy Challenges. Tournament links: https://www.mtgo.com/decklist/legacy-challenge-32-2025-09-1312814269, https://www.mtgo.com/decklist/legacy-challenge-32-2025-09-1012814238, https://www.mtgo.com/decklist/legacy-challenge-32-2025-09-0712813577