by having my army of 2 hit point dwarves wiped out by two successive draws of "Evil Storm" (1 damage on all characters if threat over 35)
the sad thing is, I didn't need to have so many dwarves on the table. The staging area was already empty and I had more than enough questing power / defense / attack to take whatever the encounter deck threw at me, EXCEPT direct-damage treacheries because I had no way of cancelling them.
It's a well known concept in MTG not to over-extend once you have the advantage, for fear of board-wiping effects. This is second nature to me when I play Magic but for some reason it's not yet internalized when playing LotR.
Hopefully, next time I play I'll remember this lesson and keep some allies back in my hand, once the encounter deck is under control
