Four Fingers is an effect-type joker that allows you to make Straights or Flushes using four cards instead of five. (Five cards can still be used for higher-scoring hands.)
Straights can score the same number multiple times using this card. For example, a hand with a 2, 3, 4, and two 5's will score all five cards as a straight.
Straight Flushes become more achievable with this joker, as a five-card hand that contains a 4-card Straight and a 4-card Flush will be considered to be a Straight Flush. For example, in a hand of 2♠️ 3♠️ 4♦️ 5♠️ 10♠️, the 2 3 4 5 make a straight of four cards and the 2 3 5 10 make a flush of four cards, together being counted a Straight Flush.
