Kuwarna was far too strong in a dominant 99-point triumph over Waalitj Marawar to finish Sir Doug Nicholls Round.
The Eagles (16th, three wins, eight losses) entered the game with three wins from their past six matches, but slumped to their biggest loss of the season.
West Coast's veteran defender Jeremy McGovern (25 possessions, seven marks) battled against the tide, Tim Kelly collected 23 disposals and No.1 draft pick Harley Reid tried to lift Waalitj Marawar in the third quarter, finishing with 14 disposals, plus a goal, for the match.
Led by skipper Jordan Dawson, who produced a masterly 32-disposal display, the Crows triumphed 21.11 (137) to 5.8 (38) at Adelaide Oval in Sunday's twilight fixture.
Waalitj Marawar was well beaten in the possession count (-140), inside 50s (-20) and lost contested possesion by 24 on a tough night.
In-form forward Jake Waterman was held to just one major and was one of five individual goalkickers for the visitors.
Wingman Campbell Chesser tried hard with 15 disposals but the Eagles' midfield couldn't arrest momentum throughout the match.
Waalitj Marawar started poorly and trailed 7.4 to 0.2 after the first stanza with Dawson kicking two goals, setting up another, gathering 12 disposals and having five inside-50s in the term.
He finished with nine inside-50s and nine marks and was among 13 Kuwarna goalscorers - winger Chayce Jones kicked three and Taylor Walker, Darcy Fogarty, Josh Rachele, Brayden Cook and Ben Keays slotted two each.
Adelaide winger Lachlan Sholl had a game-high 34 disposals, midfielders Matt Crouch (30 touches) and Rory Laird (31) were busy, and coach Matthew Nicks had the luxury of resting young on-baller Jake Soligo, who was substituted at half-time with the result settled.
With Dawson in full flight early, Adelaide recorded their highest-scoring first quarter since logging 7.5 against the Eagles in round 13 last year.
West Coast couldn't manage a goal until the seventh minute of the second quarter when Jack Williams converted a set shot.
And while the visitors scored three majors for the term, the Crows continued their scoring spree with another six goals to create a 61-point half-time lead, 13.5 to 3.4.
Adelaide broke the 100-point barrier 24 minutes into the third term - they scored five goals to one in the term and took a whopping 86-point lead into the final change.
The Crows then cruised to a percentage-boosting win with three goals to one in the final term.
KUWARNA 7.4 13.5 18.9 21.11 (137)
WAALITJ MARAWAR 0.2 3.5 4.7 5.8 (38)
GOALS
Kuwarna: Jones 3, Walker 2, Rachele 2, Fogarty 2, Keays 2, Dawson 2, Cook 2, Soligo, Sholl, Schoenberg, O'Brien, Murphy, Burgess
Waalitj Marawar: J.Williams, Waterman, Reid, Darling, Cripps
BEST
Kuwarna: Dawson, Sholl, Jones, Fogarty, Laird, Crouch
Waalitj Marawar: Kelly, McGovern, Yeo, Reid
INJURIES
Kuwarna: TBC
Waalitj Marawar: TBC
SUBSTITUTES
Kuwarna: Sam Berry, replaced Jake Soligo at half-time
Waalitj Marawar: Tyrell Dewar, replaced Alex Witherden at three-quarter time
Crowd: 40,965 at Adelaide Oval
