There are currently two cards with the name Incense. They play on how there are two meanings for the word.
Incense 1[]
Incense returns a card to it's owner's hand. Even though they may play it later, it is still a handy card to have.
Incense 2[]
Incense 2 is a bit of goading, best played when you have lots of defense. If your opponent is unable to damage you next turn, they lose 3 hearts.