~ Caveat to this review: I misread and misunderstand cards all the time, so please correct me if I've erred. ~
This is an incredibly versatile and powerful contract with virtually no downsides. It requires you to run at least 20 allies, split evenly and only between 2 exclusive traits. You can (and likely will) include more than 20 allies of those traits, but that's up to you. This means you can't include ally Gandalf or other great off-trait allies in your deck. Your heroes must also have one of the two exclusive traits, but with the current size of the card pool, that isn't much of a limitation. Once you've met those two requirements it's nothing but upsides! In the right decks, the ally cost reduction can be triggered twice per round, but even without clever planning you'll often get the ally cost reduction once per turn.
Then there is the absolutely bonkers action that opens up the card pool like nothing else. Double the viable trait targets of one card for the entire round! Exhaust Last Alliance and (just to name a few examples) ...
- Let Celeborn, Le Brand, Le Dain, or Le Boromir boost the stats of the secondary trait.
- Bring in off-sphere allies from either trait with Thranduil, Tom, Hirluin, or Kahliel.
- Run S Pippin alongside Dunhere or Le Eomer.
- Ready Gwaihir after Gondor or Warrior allies enter or leave play from T Imrahil or Lothiriel's ability.
- Put Brok Ironfist into play for free after discarding Folco or Caldara!
- Treebeard ally can pay for nearly anything and ready anyone.
- Overcome the trait restrictions of attachments. Put Fast Hitch, Golden Shield or Herugrim on almost anyone. Throw King of Dale on a Noldor or an Ent and go wild.
- Make Steward of Gondor even more insanely powerful by granting the attached hero an extra trait!
- Use The Elvenking to return any ally to hand and then play them later for reduced cost.
- Events can hit more targets and be included in more decks.
The existing contracts can all be incredibly powerful, but each has a clear drawback. Bond of Friendship requires quad sphere and limits cards to 2 copies. Council of the Wise requires a singleton deck. Fellowship excludes non-unique allies, and Three Hunters excludes all allies. Burglar's Turn separates and randomizes your attachments. Grey Wanderer limits you to one hero. They all offer amazing boons if you're willing to build around the limitations. Last Alliance seems to offer more benefits for less limitations. It's an incredibly fun and crazy card that might be a tad too good, but that remains to be seen.
You folks did a lovely job with this deluxe, thanks for sharing it with the community.