This is a wonderful card for any deck, as its special power duplicates the effects of a
Calm (400/3rd). You can play this champion directly from a your hand to negate a harmful event, rather than being required to have Delsenora in a pool to have the power work. Delsenora can't be discarded during a round of combat to negate an event. She can't be played from someone's hand to negate an event if there is already another Delsenora
in play.
Since other players are just as likely to use her to nullify an event, the Rule of the Cosmos shouldn't be much of a problem. She tends to leave players' pools quickly.
When canceling an event, she is not herself acting as an event. Thus, her power cannot be canceled by using a
Limited Wish (43/FR) or
Helm (89/FR).
Like other powerful champions, Delsenora can be the target of spells or other special powers that may cause her to be discarded.