Comparing the two fragrances…

Oryii

Penhaligon'S
Musk Cloud Intense
Ostara
Shared character
Both Musk Cloud Intense and Ostara share a composition of ylang-ylang, musk, amber, and white woods, resulting in floral, woody, sweet, and amber-leaning profiles with yellow floral accords.
How they differ
Musk Cloud Intense is characterized by powdery, animalic, and musky accords. Ostara features a much broader range of notes, including bergamot, mint, vanilla, aldehydes, benzoin, pink pepper, narcissus, violet leaves, beeswax, citruses, blackcurrant bud, juniper berries, hyacinth, clementine, spearmint, animalic notes, green leaves, cyclamen, styrax, hawthorn, juniper, red berries, leaves, beeswax absolute, leaf green, wisteria, violet leaf absolute, narcissus absolute, blackcurrant bud CO2, black currant blossom, and white wood. These components give Ostara unique green, fresh, aromatic, and fresh spicy accords.
Who each suits
Musk Cloud Intense suits those who prefer powdery, musky, and animalic profiles. Ostara suits those who prefer green, fresh, aromatic, and fresh spicy profiles.