Mars

Mars is a passive Item.

Effects

 * Double tapping a direction makes Isaac quickly dash in that direction.
 * Isaac is invincible during the dash.
 * The dash deals 4 times your damage.
 * The direction of the dash can be changed by holding another button.
 * The dash has an approximate 3-second cooldown.

Synergies

 * Thunder Thighs/Leo: Can destroy obstacles while dashing.
 * Midas Touch: Dash will freeze enemies and instantly kill them.
 * The Virus: Dash will poison enemies.
 * Monstrance: Damaging aura remains in effect during dash, allowing for enemies not hit by your dash to be damaged as well.
 * Aries: Dash will deal the additional contact damage of Aries which is slightly helpful for bosses.

Trivia

 * Picking up Mars makes Isaac look similar to War. In Roman mythology, Mars is the god of war.