I'll analyze the relationship between artifact land count and winrate for Affinity decks running 4 Thought Monitor and 4 Thoughtcast. Let me start by getting the Modern format ID and looking at Affinity data.
Now let me search for Thought Monitor to get its card ID, then analyze decks running both 4 Thought Monitor and 4 Thoughtcast with different artifact land counts.
Now I need to identify artifact lands and analyze decks with the specific configuration. Let me query for common artifact lands first, then analyze the data.
Let me fix the query to properly identify artifact lands:
Let me correct the query by removing the oracle_text reference and focus on the known artifact land names:
Let me search for the specific artifact lands individually to get their card IDs:
Now let me analyze Affinity decks running exactly 4 Thought Monitor and 4 Thoughtcast, grouped by their total artifact land count:
Let me get sources for this analysis:
Based on my analysis of 233 Affinity decks running exactly 4 Thought Monitor and 4 Thoughtcast, 2 artifact lands gives the highest winrate at 58.5%.
The breakdown shows a clear performance pattern:
The data suggests that running exactly 2 artifact lands provides the optimal balance for Affinity builds with this specific card combination. This configuration likely offers enough artifact density to enable the affinity cost reduction on Thought Monitor and Thoughtcast while maintaining mana consistency, without over-committing to vulnerable artifact lands that can be targeted by artifact hate.
Sources
Data from 81 tournaments: 86.4% MTGO, 13.6% Melee. Analysis based on tournament entries from the last 60 days.
https://www.mtgo.com/decklist/modern-challenge-32-2025-09-1512814298
https://www.mtgo.com/decklist/modern-showcase-challenge-2025-09-1412814234
https://www.mtgo.com/decklist/modern-challenge-32-2025-09-1412814287