Siren's Call (Red)

If you attack an ally controlled by an opposing hero, you will not be able to look at that hero’s hand as there is no defending hero in this situation.

You may choose a blue card without a defense property (e.g. Heart of Fyendal, Arknight Shard, etc.) and add it onto the active chain link as a defending card when resolving this card’s ability.

You cannot put the chosen card onto the active chain link as a defending card if an effect is active in the game that would prevent that card from defending. For example, if the current attack has dominate, and the opponent has already a defending card from hand on the chain link, you would not be able to put the chosen card onto the chain link as a defending card.

If a card is not added to the chain link, you do not draw a card.