What does the cryptic crossword clue "Striker’s corrupt power ensnaring everyone (8)" mean?

The wordplay uses an anagram. anagram of ALL (synonym="ALL") + POWER (synonym="POWER") = WALLOPER The answer is WALLOPER.

Striker’s corrupt power ensnaring everyone (8)

Guardian Cryptic #29672 | 20 Across | 2025-04-18 flower