1 down: Gatecrashing party not quite when expected, a beastly prince? (4,3) L?O? ??? Is it LION CUB? 17 ACROSS: Flower part extracting oxygen from different one (6) ??T??? 17 DOWN: Much sought-after element, wind in summer (6) 21 across: Having taken the two of us in, the illusionist one avoids ((8) ???H?W?R 20 ACROSS: Drop fleece inside dress (2,4) ?? D???