Many creatures in fantasy gaming worlds, especially those that dwell underground, have darkvision. Within a specified range, a creature with darkvision can see in dim light as if it were bright light and in darkness as if it were dim light, so areas of darkness are only lightly obscured as far as that creature is concerned. However, the creature can’t discern color in that darkness, only shades of gray.

 While in sunlight, the drow has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.

+ 3 health regen for 60 seconds from level 1-4
+ 6 health regen for 60 seconds from level 5-9
+ 12 health regen for 60 seconds from level 10-14
+ 24 health regen for 60 seconds from level 15 to 19
+ 24 health regen for 120 seconds at level 20

At will for a bonus action per long rest

Modifiers for Day Troll: Modifiers for Olog-hai: Str+ 2 Dex+ 1 Con+2 Int+0 Wis-1 Cha-2 

Day Troll can reach 10 feet with a standard melee weapon