Attacking with a 5/4 on Turn 4 is a very real threat, with future Food readily available in green
Its a free discard outlet as well, and there are lots of exploitable synergies with madness, discard, delirium, reanimator, and the like
It was a slow process getting the investment ready and digging far enough into the game to have the cards to spare but if a deck had no use for excess mana this was still a highly effective endgame especially for decks that used Thawing Glaciers
It had the transformation flavor using threshold, but the overall flavor beyond that was weak
Jenova, Ancient Calamity Jenova is frankly a disappointment here in her card, which fits how she is in Final Fantasy 7 too, all hype but overshadowed by Sephiroth almost all the time
Then return up to two creature cards from your graveyard to your hand