Poison Onset Time
Poisons from creature attacks will take a certain amount of time that depends on the creature’s hit dice – more powerful creatures have more virulent venom. This chart is altered down by two rows if the creature is large. If the description in the appropriate source states some other onset time, that will apply instead.
Hit Dice Onset Time
< 1 1 turn
1 2-12 rounds
2 2-8 rounds
3-4 1-6 rounds
5-6 1-3 rounds
7-9 3-18 segments
10+ 1-8 segments