1. illusive, illusory -- (based on or having the nature of an illusion; "illusive hopes of finding a better job"; "Secret activities offer presidents the alluring but often illusory promise that they can achieve foreign policy goals without the bothersome debate and open decision that are staples of democracy")
1.
And although paint is capable of approaching much nearer an actual illusory appearance of nature than stone or bronze, they never push this to the point where you forget that it is paint. - from The Practice and Science Of Drawing by Harold Speed