Fast Healing. The zern's body rapidly repairs itself. AT the start of each of its turns, if the zern has at least 1 hit point, it regains 10 hit points. 

Magic Resistance. The zern has advantage on saving throws against spells and other magical effects.

Malleable Form. As a bonus action, a zern may rapidly alter its body to gain one of the following benefits: increase its land speed by 30 feet; or gain advantage on Acrobatics checks made to escape a grapple; or gain a +2 bonus to its Armor Class; or gain advantage on melee attack rolls. This benefit lasts for 1 minute, and the zern cannot gain more than one benefit from this ability at a time. If a zern chooses to gain use this ability to gain a new benefit while a previous benefit is still in effect, the previous one ends. 

Innate Spellcasting. The zern's spellcasting ability is Intelligence (spell save DC 13). The zern can innately cast the following spells, requiring no material components: 

At will: alter self, enlarge/reduce

1/day each: gaseous form, polymorph

Multiattack. The zern makes two attacks with its spear, or two attacks with its Warping Energy.

Spear. Melee Weapon Attack: +6 to hit, reach 5 ft., one creature. Hit: 7 (1d8+3) piercing damage.

Warping Energy. Ranged Weapon Attack: +6 to hit, range 30/120 ft., one creature. Hit: 17 (4d6+3) force damage.