Ezio begins to train Karel in the ways of the Assassin Order by first reciting their creed
"Nothing is true, everything is permitted"
"Stay your blade from the flesh of an innocent."
"Hide in plain sight, be one with the crowd."
"Never compromise the Brotherhood."
Ezio then gos through a series of freerunning exercises and testing his student's skills with a sword , finding that they are decent enough he then takes Karel on missions around the city of neverwinter. Showing him how to blend in to the surroundings and crowds , picking pockets , armed and unarmed combat, alternative or multiple weapon attacks, stealth and public assassination techniques, freerunning and long-range combat. Until one day he felt Karel was ready after six months of rigorous physical , mental and survival training, Ezio told Karel to join him on an errand then leaving him in the town square and returns to the halls of Justice the location where Ezio used as his assassin hideout.
Karel then looks around " master ? " and finds him gone when he is then surrounded by several Templar soldiers. Karel curses under his breath and observed his surroundings thinking to himself ( " there is too many to fight i have to run " ). Karel then takes off by running up a nearby wall. In a mix of shouting the Templars follows him and is now running across rooftops trying to avoid open combat at all costs as he runs he looks for a place to hide and finds one a pile of hay near the stables. Karel then takes a dive into the hay from the top of a nearby roof.
Karel then waits till the guards had passed before getting out and dusting himself off. Karel then returns to the hall of justice where Ezio greets him joined by his partner Niccolò di Bernardo dei Machiavelli.
Karel gets mad at his mentor " master , why did you leave me out there on my own ? "
Niccolò sighs and then tells Karel " there is only as much as we can teach through words , nothing beats experiencing something first hand you had done well novice , we think you are ready to join the brotherhood "
Ezio then talks to Karel " the time has come for you to become a member of the order do you accept ? " and offers him a hand.
" Yes "
"Laa shay'a waqui'n moutlaq bale kouloun moumkine. The wisdom of our creed is revealed through these words. We work in the dark to serve the light. We are Assassins. Nothing is true, everything is permitted."
Ezio then turns to Karel " it will only hurt for a short time " he then brands Karel's left ring finger, using tongs that had been heated in the aforementioned brazier , followed by a leap of faith to signify their trust in the Order and their fellow Assassins.