Its a free discard outlet as well, and there are lots of exploitable synergies with madness, discard, delirium, reanimator, and the like
Then return up to two creature cards from your graveyard to your hand
Attacking with a 5/4 on Turn 4 is a very real threat, with future Food readily available in green
For example, you might go for Countersquall over the usual Counterspell, or Lim-Dl's Vault as an alternative to the usual Demonic Tutor
and how it, specifically, could give rise to two-for-one opportunities
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