Do the first for someone mana screwed to help them out (there is always someone) and then the last two to folks breaking an artifact like Skullclamp or Mind's Eye and then punish the other for holding a full grip
There are some generically powerful cards like Protector of the Wastes and Will of the Abzan, and a few hyperspecific ones that flesh out the toughness/defenders theme, like Arbor Adherent and Rampart Architect
The concept of the card is interesting, practically equivalent to a Momir Vig of lessons
This is an exception to the general rule that each face has its own characteristics
It makes sure your deck is consistent and complete, helping identify what your deck might currently be lacking, letting you refine your deck lists independent of playtesting
Elusive Otter likely isnt going to make too many waves in highlander formats, but there are many other applications for this cheap, tricky little creature