Hearts boss Csaba Laszlo has warned Rangers the rest of the Clydesdale Bank Premier League will now fancy beating them after their Champions League humiliation at the hands of Unirea Urziceni.
Romania-born Hungarian Laszlo was one of few people in Scotland who knew of the threat posed by the Group G minnows from his former homeland.
But even he was shocked to see them rack up a 4-1 victory at Ibrox on Tuesday night.
Laszlo reckons the result will boost the confidence of SPL sides who may have previously believed they were on a hiding to nothing against the Scottish champions.
"This can also be very interesting for the league," Laszlo said of Tuesday night's game.
"The other teams think, 'Eh, look here - they beat Rangers'.
"Maybe there can be a nice autumn for the clubs who are behind."
Laszlo, whose side suffered their own European embarrassment at Dinamo Zagreb in August, added: "You cannot tell me the Rangers players and the staff and the club don't suffer.
"We suffered also against Dinamo Zagreb - I know this feeling.
"Now they must be very, very careful to not go down.
"These are the most important moments in the lives of these big clubs, especially if you don't have experience of this."
Indeed, Laszlo questioned whether the Old Firm's dominance of the Scottish game would make Rangers ill-equipped to deal with such a defeat.
"You don't know the reaction," said the Hearts boss, who nevertheless insisted he wished Rangers no ill, with Ibrox boss Walter Smith one of his closest colleagues in the game.
He added: "Everybody knows we all together suffer a little bit in Scottish football.
"Rangers are not alone."
And Laszlo refused to write off Rangers' hopes of avoiding Champions League elimination.
"We must not go too deep and say now Rangers are finished," he said.
Laszlo revealed how Unirea's first ever European victory had been received in Romania, saying: "Yesterday, a Romanian journalist called me and he told me, 'We are so proud; we're writing about history for this club'.
"If a small club which didn't before have a big history in the Champions League wins a game away - especially at one of the biggest and most famous clubs in Europe - it's always something special."
He added: "Romanian football was 10 years previously only Dinamo (Bucharest) and Steaua.
"I was very surprised by Unirea Urziceni."
After finishing third last season, Hearts might have been one of those clubs to benefit from an Old Firm slump.
But the loss of key players has seen Laszlo's men win only two of their opening eight SPL games to lie eighth in the table.
Saturday's meeting against rock-bottom Falkirk appears the perfect opportunity to improve that record.
But the winless Bairns have proven something of a bogey-team for Hearts in recent years, with the Jambos winning only three of the past 11 meetings in all competitions.
"This is a game which it seems you can only lose," Laszlo said.
"If don't you win 3-0, everybody says, 'What is this?'
"Falkirk last season showed us in the cup, in the league, if you concentrate, you don't have a bad team.
"I saw their game on DVD against St Mirren. Falkirk are not a team which you go out and beat 5-0."
Once again highlighting his side's poor scoring record this season, Laszlo added: "If you don't shoot goals, you don't win any game."