Here are my recommendations for the amount of toxicant arrows you might need. Lvl 5-50, 20-90 Arrows. Lvl 55-100, 100-200 Arrows. Lvl 105-150, 200-300 Arrows. Lvl 155-200, 300-400 Arrows. Lvl 205-250, 400-500 Arrows. Lvl 255-300, 500-600 Arrows. Lvl 305-350, 600-700 Arrows. (These are for non-X-Dunkleosteuses)Also bring atleast a 250% crossbow.