If Deutsche Bank fails, then in the opinion of many, including myslef, it would far surpass the 2008 financial crisis. It would be a Lehmann failure on steroids. During the 2008 crisis the Fed had to create 16 trillion out of thin air to prop up the system.
“The audit of the Feds emergency lending programs was scarcely reported by mainstream media albeit the results are undoubtedly newsworthy. It is the first audit of the Fed in United States history since its beginnings in 1913. The findings verify that over $16 trillion was allocated to corporations and banks internationally, purportedly for financial assistance during and after the 2008 fiscal crisis.”
http://www.forbes.com/sites/traceygreenstein/2011/09/20/the-feds-16-trillion-bailouts-under-reported/#1fd4a9ba6877
Yes, $16 trillion over months and months, because most banks were losing money and had crappy mortgage loans losing value.
Most banks are in much, much better shape with positive earnings and large excess cash reserves. No need to create $100 trillion overnight.