Lightseeker Hyetta

Whenever a creature you control dies, you may
choose to create a Shabriri Grape. It is a white,
black, and red artifact with "{t}{2}: Sacrifice this
artifact: You gain 3 life and a madness counter." Activate this ability only once per turn.
At the beginning of your upkeep, if you have 10 or
more madness counters, exile Hyetta, then return
her to the battlefield transformed.