Crossword puzzle clue "card game that's a hint to today's theme"

Card game that's a hint to today's theme

Hint (and a hint to this puzzle's theme)

First name of a civil rights activist who would turn 85 today, and whose adopted last name is a hint to this puzzle's theme

Classic candy ... and a hint to today's theme

Winter feature with a hint to today's puzzle theme

Annual English sports event that begins today, and a hint to this puzzle's theme

Gift card phrase, a homophonic hint to the puzzle's theme

Playing card apt to this puzzle's theme (hint: see the ends of the longest answers)