La carte Opalescence est une référence à Titania's Song de par sa valeur de mana et son effet d'"animation", transposé des artefacts aux enchantements.
Le terme "animer" provient originellement de la carte Animate Artifact. Plus récemment Animate Object a généralisé le concept d'"animation".

Source (Opalescence - "An exercise I did involved looking at cool designs we had done for artifacts and designing enchantment-focused versions. [...] I had a lot of fun building decks with Titania's Song , so it seemed like a cool idea to make an enchantment version [...]")