Occasional facility ruler describes as weird (3-7)
I believe the answer is:
odd-looking
'as weird' is the definition.
The definition suggests an adjective which matches the answer.
'occasional facility ruler' is the wordplay.
'occasional' becomes 'odd' (odd can mean occasional or infrequent).
'facility' becomes 'loo' (loo is a kind of facility).
'ruler' becomes 'king' (king is a kind of ruler).
'odd'+'loo'+'king'='ODD-LOOKING'
'describes' is the link.
Can you help me to learn more?
(Another definition for odd-looking that I've seen is " Visually peculiar".)