The totemic associations are as follows:
Wolf (Faol) – guardianship, ritual, loyalty, free spirit, intuition, shadow
Blackthorn (Straif) – blasting magic, guardians, boundaries, no choice
Blackbird (Dru Dhubh) – territoriality, omens, enchantment, gateways
The Blackthorn is a tree of winter. The fruits of the tree, known as sloes, ripen and sweeten only after the first frost. Sloe gin is made from these fruits. A cold spring is traditionally known as a blackthorn winter, as the blackthorn often bears its white blossoms while winter's chill still hangs in the air.
The blackthorn has vicious thorns that can cause painful infections, and forms dense thickets when left to spread on its own. It has tough dark black bark, hence its name.
Blackthorn's Gaelic name "straif" has connections with the English word strife. Its thorns as sometimes used in witchcraft as "pins" to pierce wax poppets. Some legends attest that the witches mark was made upon the flesh of a witch with a blackthorn thorn.
Blackthorn's wood is used in the creation of the Irish cudgel or shillelagh, which is an old traditional tool of the male leader of a coven. Blackthorn staves and wands are used in blasting/cursing magic.
Charm of the Thorn
As a storm of tangl'd Briars~Viridarium Umbris: The Pleasure Garden of Shadow by Daniel A. Schulke
I cast forth the spines of torment:
Byt weave of thorns I bar the Way!
Ye Strength of the Nail of the Cross,
All spirits foul be fix'd upon Thee.
Let Ghost and Flesh twain be punctur'd
And Darkness fall -- for thou Art bound!