Wizard abillity for +1

[TheMighyJew]

I have the game not in the english version so it is not clear.
The wizard can throw up to 3 cards to get +1 while escaping a monster.
Does he have to use this before the throw? or he can throw, lets say get 3 , and then discard 2 cards for another +2 which will save him ( 2+3=5) .