While Hinata busts this wide open, the more general use case is as a flexible fog or board wipe protection spell
open up a card to attack for more summoning power or use an ability at the risk of having more cards on the table
#2 The problem with tribal is the incentive cards suck unless a good part of your deck supports that tribe, and picking cards that supports that tribe usually means you have to ship better cards
For example, you may collect or play with Pokmon TCG cards and you just want to turn a stack of cards into an organized storage solution like using a cute, simple Pokmon card binder
If it isn't, it won't lose all abilities, even if it was an artifact, creature, or planeswalker when the ability was activated or when it triggered
Each plane is a unique world, with its own history and culture, its own distinct ecosystems and recognizable landscape