While going through a list of evergreen keywords, one caught my eye- Exchange. It is a keyword action that is used in cards like Eldritch Moon's Tree of Perdition or Journey into Nyx's Daring Thief.
The challenge here is to make a card (any color, any type) that uses this word. I feel like exchanging control over permanents is overused, so you'll get "bonus points" for not straying there.
Deadline is The end of November, as with my planeswalker lore contest. All entries will get a favorite, winners will either get a follow or more favorites and Circuit Points.
1st - 1 Circuit Point
2nd - 3/4 Circuit Point
3rd - 1/2 Circuit Point
Honorable Mention - 1/4 Point