They are immune to not just one, but two types, those being the Fighting-type and the Normal-type (the Normal-type, in comparison, is also immune to the Ghost-type)
With all the attention Lulu, Stern Guardian is currently getting, however, Lulus applications may become well-known enough for players to remove them more promptly
Spacious card holder: Enjoy the large capacity of our 6.88 * 9.64 * 1.96 inches trading card binder, which features 400 pockets and 50 pages to store your collectible cards
Card condition is near-mint or better, see picture for a sample
Once per turn: You can target 1 other face-up card you control and 1 card your opponent controls
This is the opposite of most other retailers