Minion finder
Pick the bonus you want and see every minion that gives it, with the cheapest Rein to farm first. A Rein rolls once per cleared wave that includes its enemy, so a common enemy with a low drop chance can beat a boss with a higher one.
Bonus Species Rarity Rein from Sort
Displays 67 of 67 minions. The Waves stat represents the expected wave count required on the optimal map to see a Rein drop: calculated as 1 / (drop chance × proportion of waves containing the enemy).