Patch 16.12.1 data loaded
Theorycraft League of Legends builds with combat-accurate damage modeling, rune and item depth, and shareable loadouts.
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Combo-first damage modeling for every champion
Rune and item depth with visible unsupported effect notes
Portable build codes and public /b snapshots
Free now, Pro when you need scale
Champion, items, runes, stats, abilities, configuration, calcs, and Simulate are all available for dev testing.