Rule 712.3 · Double-Faced Cards
Modal double-faced cards have a Magic card face on each side. These faces are usually independent from one another, but they may have an ability that allows them to “transform” or “convert” on either face.
Subrules
A modal double-faced card’s front face is marked by a front-face symbol in its upper left corner. The front-face symbol is a single black triangle inside a sideways teardrop.
A modal double-faced card’s back face is marked by a back-face symbol in its upper left corner. The back-face symbol is two white triangles inside a sideways teardrop.
Each face of a modal double-faced card includes a hint bar in the lower left corner with information about the opposite face. This is reminder text and has no effect on game play.