Ability Score Increase. Your Dexterity increases by 2. You Wisdom increases by 1.
Age. Goblumphs reach adulthood at age 8 and are longer lived than typical goblins, living up to age 80.
Alignment. Goblumphs are typically neutral. Some are selfish, while others are more altruistic. They rarely non-neutral alignments.
Size. Goblumphs are between 3 and 4 feet tall and way between 40 and 70 pounds. Your size is small.
Speed. Your base walking speed is 30 feet.
Abberant Wisdom. You gain advantage on Wisdom saves.
Gas Jets. You gain advantage on Athletics and Acrobatics checks involving climbing, jumping and/or falling. You you take falling damage, you may reduce the damage by an extra 1d6.
Darkvision. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can't discern color in darkness, only shades of grey.
Nimble Escape. You can take the Disengage or Hide action as a bonus action on each of your turns.
Stench Spray. One creature within 10 feet of you must succeed a DC 10 Dexterity saving throw or be coated in a foul-smelling liquid. The coated creature exudes a horrid stench for 1d4 hours. They have the poisoned condition during this time. Creatures within 5 feet of the coated creature are poisoned while they remain within 5 feet of the creature. A coated creature can remove the stench on itself by taking a short rest to bathe in water, vinegar, or alcohol. Once you use this ability you cannot again until you take a long rest.
Tentacles. You can draw and stow things with your tentacles. By concentrating you can use all of your tentacles to hold an object, essentially giving the benefits of having an extra hand.
Languages. You can speak, read and write Common and Goblin or Deep Speech.