Strength (Tarot card)
Strength is a Major Arcana Tarot card, and is numbered either XI or VIII, depending on the deck. Historically it was called Fortitude, and in the Thoth Tarot deck it is called Lust. This card is used in game playing as well as in divination.

Description 

The design of this card is fairly constant across tarot decks. The key characters are that of a woman and a lion, with the woman leaning over the lion. Many cards, including that of the Rider-Waite-Smith deck, have the woman clasping the lion's jaws. Some feature an Infinity symbol hovering over the woman's head. Other decks have the woman sitting upon the lion, or merely with one hand upon it. Some decks feature just one of the characters; flowers are often presented on this card.

According to Eden Gray, the lemniscate above her represents enlightenment and spiritual powers, whereas the lion represents animal passions and earthly cravings.

History 
The Strength card was originally named Fortitude, and accompanies two of the other cardinal virtues in the Major Arcana: Temperance and Justice. 

The older decks had two competing symbolisms: one featured a woman holding or breaking a stone pillar, and the other featured a person, either male or female, subduing a lion. This Tarocchi del Mantegna card (image, above), made in Ferrara around 1470, illustrates both. The modern woman-and-lion symbolism most likely evolved from a merging of the two earlier ones.

Numbering
Strength is traditionally the eleventh card and Justice the eighth, but the influential Rider-Waite-Smith deck switched the position of these two cards in order to make them a better fit with the astrological correspondences worked out by the Hermetic Order of the Golden Dawn, under which the eighth card is associated with Leo and the eleventh with Libra. Today many decks use this numbering, particularly in the English-speaking world. Both placements are considered valid.

Interpretation

According to A.E. Waite's Pictorial Key to the Tarot, the Strength card carries several divinatory associations:

10.STRENGTH.--Power, energy, action, courage, magnanimity; also complete success and honors. Reversed: Despotisim, abuse of power, weakness, discord, sometimes even disgrace.

Alternative decks 
 The Darkana tarot deck refers to Strength as "Fortitude", and depicts a woman getting the words 'Nil desperandum' (never despair) tattooed on her side. 
 The "Flemish Deck" by Vandendorre (c.1750 – 1760) renumbers La Force ("Strength") as XI and La Justice ("Justice") as VIII.
 In the X/1999 Tarot version made by CLAMP, The Strength is Yuzuriha Nekoi and her Inugami, Inuki.
 In the Thoth Tarot, Strength is renamed "Lust".