Your Tressym familiar becomes a large creature and appears on the ground in an unoccupied space of your choice within range. It has the same appearance, and it is equipped with a saddle. Any of the equipment created by the spell vanishes in a puff of smoke if it is carried more than 10 feet away from the steed.
For the duration, you or a creature you choose can ride the Tressym. The Tressym uses the Tressym stat block with 13 temporary hp gained when in the large form. It has a move speed of 40 feet and a fly speed of 40 feet. When the spell ends, the steed gradually fades, giving the rider 1 minute to dismount. The spell ends early and suddenly if the steed takes damage equal to or exceeding its temporary hp.
* - (Tressym Familiar)