Having already made his mark as the outstanding player on the pitch and having scored a sublime goal to put Barcelona 2-1 ahead against Manchester United, the 23-year-old Argentine found himself wide on the right with his team attacking again.
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The World Player of the Year, though, merely shimmied past them into space, providing the pass that led, almost inevitably, to David Villa's wonderfully struck, high curling shot that sealed Barcelona's 3-1 victory.
The performance not only earned Messi the Man of the Match award but moved the little forward another notch closer to the game's all-time greats Pele and fellow Argentine Diego Maradona.
Barca manager Pep Guardiola said: "Messi is the best player I've seen and probably the best I ever will see. We have great players but he makes the difference and without him we would not have that difference in quality. He is unique. A one-off."
Messi's Portuguese rival Cristiano Ronaldo, on the losing side when Barca knocked Real Madrid out of the Champions League in the semi-finals, must have thought the same thing if he was watching the match on TV like hundreds of millions of others.
Messi's goal - his second against United in a Champions League final after his header in 2009 - was a brilliantly executed 20-metre left-foot curling shot that spun away from diving goalkeeper Edwin van der Sar to put Barca back in front and really finished the game as a contest.
The intriguing thing about that statistic is that Messi is not an out-and-out centre-forward because Barcelona's approach echoes the way Hungary played in their golden years of the early 1950s and Ajax Amsterdam did in the era of 'Total Football'.
