It wasn't just in one deck, it was causing a diverse set of designs all of which existed largely to make use of it
Pair him with a creature that untaps him or creates infinite tokens with haste, and you suddenly end the game
There are no fewer than a dozen distinct archetypes that a sharp player can confidently use for a given tournament
Yes, Unwanted Remake does only destroy the Creature, and provides the opponent with a replacement creature via Manifest, but its worthwhile for redundancy alone
And, in my opinion, Frederick's version is more Forest-y than the ones in SNC
Beastmaster Ascension: This is one of the best go-wide finishing cards, and included here as a way to make your creatures all super pumped, so only 3 Squirrels can kill Emrakul, rather than 15