Parchment Amulet - Yichudim and Prayers for Comprehending and Remembering Mishnayot

Parchment leaf with scribal writing – amulet with Kabbalistic yichudim and hashba'ot of Angels for comprehension and retention of study of the Mishnah. [Ashkenazi scribal script, Ari scribal writing – Hungary?, early 20th century]."It should be G-d's will… that He send me the Angel… which shall explain this Mishnah which I am studying… that I should never forget that which I study today…".
14X16.5 cm. Good condition. Stains and glue residue on margins [apparently, in the past this amulet was glued into a book].