Charm

Charm (チャーム Chaamu) is a keyword ability that primarily appears on black cards. It first appeared in WX-04 Infected Selector.

The current reminder text for Charm is:

Charm appears to be a resource to be used as payment for effects, such as Ulith, Enma of Suffering.

Clarification will be needed as more is revealed about Charm: banish interactions, additional effects.