Innate Spellcasting. The tikbalang's innate spellcasting ability is Intelligence (spell save DC 14). The tikbalang can innately cast the following spells, requiring no material components.

Shapechanger. The tikbalang can use its action to polymorph into a Medium humanoid or beast of a type it has seen, or back into its true form. Its statistics are the same in each form, and it cannot closely mimic specific individuals. Any equipment it is wearing or carrying is also transformed. It reverts to its true form if it dies.   Magic Resistance. The tikbalang has advantage on saving throws against spells and other magical effects.   Speak with Beasts and Plants. The tikbalang can communicate with beasts and plants as if they shared a language.