Barmecide

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Bar·me·cid·al

B0081300 (bär′mĭ-sīd′l) also Bar·me·cide (bär′mĭ-sīd′)adj. Plentiful or abundant in appearance only; illusory: a Barmecidal feast.
[After Barmecide, , a nobleman in The Arabian Nights, who served an imaginary feast to a beggar.]

Barmecide

(ˈbɑːmɪˌsaɪd) or

Barmecidal

adjlavish or plentiful in imagination only; illusory; sham: a Barmecide feast. [C18: from the name of a prince in The Arabian Nights who served empty plates to beggars, alleging that they held sumptuous food]