I am examining niche ways to cast Find Steed. I'm specifically interested in ones that don't require me to take levels in Bard, Thief Rogue, Wizard, or Paladin.
I had the idea that I could True Polymorph into a creature that has the Use Magic Device ability, or access to the Paladin spell list, and then cast Find Steed off of a paladin scroll.
background reference: What creatures can cast spells from spell scrolls?
Is it even viable in theory that a character without access to paladin spells uses True Polymorph to turn into a creature who can use Paladin spells, casts Find Steed from a scroll and then retains the summoned steed afterwards?
An important follow-up question: what is an example of a published creature able to use Paladin spell scrolls? I want to satisfy the case where the DM insists that you need to have a published creature of some sort in order to cast True Polymorph.