Why wouldn't you
To explore, you'll need to have a creature that can go on a journey and some card that causes it to explore (either as part of a spell effect, or an activated or triggered ability)
The rest are narrow, powerful combo pieces like Earthcraft, Dream Halls, Fluctuator, and Recurring Nightmare
Vincent Valentine / Galian Beast Though it starts tiny, Vincent Valentine can be devastating when you combine it with removal spells like Sephiroth's Intervention
Keyword soup aside, Lightning comes with the remarkable ability to double any damage youd deal to a player (or a permanent) that player controls until your next turn
Whether or not this card should see play would depend on the specific deck and strategy, but it could be a situational inclusion for decks looking for extra creature recursion options