Boggle Oil. The boggle excretes nonflammable oil from its pores. The boggle chooses whether the oil is slippery or sticky and can change the oil on its skin from one consistency to another as an action.
Slippery Oil: While coated in slippery oil, the boggle gains advantage on Acrobatics checks made to escape bonds, squeeze through narrow spaces, and end grapples.
Sticky Oil: While coated in sticky oil, the boggle gains advantage on Brawn checks made to grapple and any ability check made to maintain a hold on another creature, a surface, or an object. The boggle can also climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
Spellcasting. The boggle’s spellcasting ability is Wisdom (spell save DC 11, +3 to hit with spell attacks). It has 1 mana, a mana limit of 1, regains all expended mana when it finishes a long rest and regains half its total mana (rounded up) when it finishes a short rest. It knows the following spells:
Uncanny Smell. The boggle has advantage on Perception checks that rely on smell.
Pummel. Melee Weapon Attack: +1 to hit, reach 1 m. Hit: 2 (1d6 − 1) bludgeoning damage.
Dimensional Rift (1/turn). The boggle can create an invisible and immobile rift within an opening or frame it can see within 1 meter of it, provided that the space is no bigger than 2 meters on any side. The dimensional rift bridges the distance between that space and any point within 5 meters of it that the boggle can see or specify by distance and direction (such as “5 meters straight up”). While next to the rift, the boggle can see through it and is considered to be next to the destination as well, and anything the boggle puts through the rift (including a portion of its body) emerges at the destination. Only the boggle can use the rift, and it lasts until the end of the boggle’s next turn. Before or after creating the rift, it can make a pummel attack.
Oil Puddle. The boggle creates a puddle of oil that is either slippery or sticky (boggle’s choice). The puddle is 2 centimeters deep and covers the ground in the boggle’s space. The puddle is difficult terrain For all creatures except boggles and lasts for 1 hour.
If the oil is slippery, any creature that enters the puddle’s area or starts its turn there must succeed on a DC 11 Reflex saving throw or fall prone.
If the oil is sticky, any creature that enters the puddle’s area or starts its turn there must succeed on a DC 11 Reflex saving throw or be restrained. On its turn. a creature can use an action to try to extricate itself from the sticky puddle, ending the effect and moving into the nearest safe unoccupied space with a successful DC 11 Brawn check.
No concoctions, maneuvers, or spells
All monsters in this system should have maneuvers or spells. You should add some maneuvers or spells to this monster. If you do so, please make a suggestion on github so I can finish adding maneuvers and spells to all monsters via https://github.com/mlenser/kryx-rpg-issues/issues/9