when playing The Trickster-God's Heist and taking control of my equipped Icehide Troll, the Rune of Speed which was attached to the equipped Runed Crown stayed on my side and got attached to the Sculptor of Winter (which happened to have an Arachnoform on too).
When I unequipped the Crown and attached it to the Sculptor, the Rune of Speed got back in place on the Crown.
See attached screenshot for the board state.
when playing The Trickster-God's Heist and taking control of my equipped Icehide Troll, the Rune of Speed which was attached to the equipped Runed Crown stayed on my side and got attached to the Sculptor of Winter (which happened to have an Arachnoform on too). When I unequipped the Crown and attached it to the Sculptor, the Rune of Speed got back in place on the Crown. See attached screenshot for the board state.