Nether Eye: 30% -> 2% per container using betterfortresses:chests/keep.
Full keep template breakdown: main 2, left wing 11, right wing 7, four towers 2+4+4+5 = 35 containers (34 barrels, one chest).
Main and Create-compatible templates have the same count. Generated totals can vary when pieces fail to fit.
At 35 rolls, mean = 0.7 eyes; probability of at least one = 1 - 0.98^35 = 50.69%.
Two other right-wing containers use minecraft:chests/nether_bridge. Their native End Remastered chance is unchanged, as are fortress loot elsewhere and all other PackagedLoot features.
