Olid Loa
Cardtype: Combat
Clan: Samedi
Only usable before range is determined. Retainers on the opposing minion lose their abilities this combat. The opposing minion cannot maneuver to close or press to continue this combat.
Artist: Juan Calle
The name on this card has two components: Olid and Loa.
Yes, I know this statement seems incredulously obvious, but bear with me for the moment.
Loa
The Loa (also Lwa or L'wha) are the spirits of the voodoo religion practiced in Louisiana, Haiti, Benin, and other parts of the world. They are also referred to as Mystères and the Invisibles, in which are intermediaries between Bondye (Bon Dieu, or good god)—the Creator, who is distant from the world—and humanity. Unlike saints or angels however, they are not simply prayed to, they are served. They are each distinct beings with their own personal likes and dislikes, distinct sacred rhythms, songs, dances, ritual symbols, and special modes of service. Contrary to popular belief, the loa are not deities in and of themselves; they are intermediaries for a distant Bondye.
(from Wikipedia)
The Loa are spirits that interact directly with mortal beings and each belong to a group of Loa that govern a particular domain. Famous Loa include Papa Legba and The Baron (Samedi).
Olid
— adj
foul-smelling
[C17: from Latin olidus, from olēre to smell]
(from Dictionary.com)
So the Olid Loa is in fact a foul smelling spirit used to keep your enemies at bay. And that's why your card does what it does.
P.S. The is no actual Loa known as "Olid Loa" (or at least there is no information about it available to me).