2 Close Call 2 Cooperation 2 Delay the Inevitable 2 Quick Thinking 2 Recover Treasure 2 Search Object 1 Use Cover
Brawling is nice to recycle with Champion. Search Object helps out to find the Equipment you need for Recover Treasure; this lets you only play one Back Pack which is an awkward card early while extra copies are redundant late (Recover Treasure, Master). You also want to get Wood Shield early since it is "free" to return with Recover Treasure.
Master is really clunky with cards like Cleave, Move Silently and Rapid Strike which is why I only play one. Also, with only 40 cards you can deck yourself. Belt Pouch is another consideration for a bump in cards when necessary.
Delay Inevitable is better if you play Wood Elf Scout to have 4 Tactics available. Its also not as good if you don't have a large number of the powerful Creatures in your Dungeon.
Use Cover is very good against a number of the best enemies. Defensive Training is another possibility but it is better against Area Traps.