See, I have to agree with jdizzy. I don't think Madril is the problem. I think the problem is the sword. As a companion, Madril can be killed a number of ways and would definitely be targeted during the maneuver, archery, etc. phase. Furthermore, with all those threats lying around...it's certainly risky.
But the sword discarding a minion? That is more powerful than
Sting or
Glamdring from set one. Put four of those in the deck and you effectively don't have to see minions at sites 5 or seven (considering the sanctuary at six) and Gondor is already built in with mega-Healing.
I don't play past
Mount Doom because it seems like all of the new sets have just completely overpowered weapons and conditions.
-wtk