Fetching two lands is the going rate for 4 mana, and fetching two cards with the forest subtype means this green sorcery can do some serious fixing by grabbing dual lands or even Triomes
Meanwhile their mnemomages have infiltrated the sewers of each of the major cities
If you put it over the Selkie, then the resulting merged creature is Otrimi, the Ever-Playful a 6/6 creature with trample and Otrimi's triggered ability, but it also has the Selkie's islandwalk and triggered ability
Remember when MaRo almost killed Magic by printing an untapped dual land that gives you poison counters
What with this also falling into the win more camp this is a synergy that is only very lightly addressed
The speed of the game makes it hard to find the time for a card that doesn't directly impact the game, but the real problem was that a lot of cards started using their graveyards for fun and profit, much more so than in the past