The most common type is simply "damage," which is in the form of damage counters
They have 4 Willpower, so are hard to remove that early in the game, and will likely net you a decent amount of passive lore before your opponent can effectively deal with it
Once I got a nasty Yue
The reason is simple, really: in games that come down to one or two lore differences, getting some added questing in with Cursed Merfolk can mean the difference between winning and losing
You can cast commanders, foretell cards, or suspended cards and it will work, as will proliferate effects or +1/+1 counter synergies
Theres representation for pretty much all of the major characters in the Lord of the Rings saga here, even some that are already present in mono coloured form such as Aragorn, Bilbo, Frodo, Gimli, Legolas, Merry, Pippin and Samwise