Leebo
"When you are dealt a faceup Damage card, draw 1 additional Damage card, choose 1 to resolve, and discard the other."
Vs
Mareek
"When your attack deals a faceup Damage card to the defender, instead draw 3 Damage cards, choose 1 to deal and discard the others."
I'm a little foggy on the order, I assume mareek chooses first and then leebo draws and picks but looking at the order of resolution that all deals with what happens before the crit is dealt.
I did try to Google this but came up blank.
