This card seems like a strong contender for any white deck deck where combat matters
I like the blend of finding a card for the situation and also digging into the deck to hit lands and good stuff
Theres incentive to play battles, as winning earns you XP, which helps you level up, which helps you open more booster packs, which helps you build better decks to win more battles
Outside of Senseis Divining Top and friends, The Lunar Whale plays well in a variety of Commander decks that have a low curve
Another possible gimmick for the species might be the ability to become forest cards when they're no longer of use as creatures, since their forests would be part of the same fungal network
But there are some advantages too, as the creature you blink returns as a flier