It’s a new boss monster for Tenyi!
天威の龍拳聖 Ten’i no Ryuukensei (Tenyi Master of the Dragon Fist)
Note, while Sei means literally Saint/Holy, in contexts like this for Kensei (either of fist or sword or what have you), it tends to be used to refer to one who is an absolute master of their style of combat, who knows the innermost mysteries and secrets of how their combat goes. So it’s best to avoid it being too literal.
Also, it’s description is “It’s a powerful new link monster that comes bursting through for Tenyi Decks!”
It’s a Link 3 LIGHT Link Monster with Bottom Left, Bottom and Bottom Right arrows