I bought this deck months ago, on ebay, because it's quite difficult to find it these days. Designed by R.J. Stewart and illustrated by Miranda Gray in 1988, it is based on the life and prophecies of Merlin as narrated by the medieval historian Geoffrey of Monmouth.
This is a pip deck and hence the presence of numbers and the importance of numerology instead of the suggestive power of images might make it less appealing.
Also it strongly differs from traditional decks. First of all three cards have been renamed: The Guardian (The Devil); The Innocent (The Hierophant) and the Universe (The World); and the order of the Major Arcana is a completely new one, reflecting the universe as conceptualized by Merlin. The 22 Arcana has been divided in seven groups of three cards - Worlds, Wheels, Enlighteners, Liberators, Redeemers, Givers, Sharers - plus the Universe as One Manifest Reality.
To make an example, the first group is formed by The Moon, The Sun, The Star as the three worlds of experience and knowledge.
The suits have been named according to the animals inhabiting the four elements, hence we've got Fishes (Cups); Beasts (Pentacles); Birds (Swords); Serpents (Wands). Though there's no illustration on the card, there are captions highlighting the overall meaning of it. I've chosen the combination below (Seven of Beasts; Two of Serpents; Two of Fishes) as a talisman for self-exploration through focus, the ability to discard something and make choices, liberation as a final aim. In the companion book the creator underlines the connections between the Major Arcana and the numbered cards of the Minor and thus nurturing the concept of tarot as a whole system of interwoven correspondences.
He then identifies polar pairs among the Major, as The Hermit and The Innocent; The Magician and the Priestess; Death and The Emperor and so on.
In the description of the Trumps we find also a short lists of beings represented by them, from human to ex-human and ultramundane, spiritual creatures. To mention this blog's favourite beings, fairies, are represented by The Moon, The Wheel of Fortune and The Magician, while nature spirits and elementals are aknowledged under The Priestess' influence, though my personal view is that she has something to do with fairies as well.
I especially like the description of beings linked to The Hermit: "Supernatural consciousness withdrawing from individuation. Also relates to certain innerworld beings who choose to remain as guides or inspirers of understanding, rather than cross into the void beyond being".
The Hermit is here the old wise Merlin himself that brings in his hand not the well known lantern, but a transparent egg containing the red and white dragons of the legend.
Finally court cards - Page, Warrior, Queen, King - are connected to seasons and elements in a Great Court Circle, encompassing the whole year. Here you can see the Page of Beasts whose keyword is amenable, accompanied by a watchful red fox. I found this deck highly mental and generally more useful for personal meditation and study than for readings and divination.
Here's a link to an interesting review I found on a blog: