I've noticed, too, that there are certain cards he won't buy/play.
For example, I've never had LR buy and play and Old Witch against me. Witch is often the first $5 card he plays, but I've never seen him use Old Witch. There are a number of more recent cursers that fall into this category: Sea Witch, Witch's Hut, Charlatan, Coven. LR buys Young Witch first turn, and never fails to go after Familiar, but for some reason more recently-added cursers are ignored.
For example, I've never had LR buy and play and Old Witch against me. Witch is often the first $5 card he plays, but I've never seen him use Old Witch. There are a number of more recent cursers that fall into this category: Sea Witch, Witch's Hut, Charlatan, Coven. LR buys Young Witch first turn, and never fails to go after Familiar, but for some reason more recently-added cursers are ignored.