In either case, the deck needs tricky defenses to get to that point, since its creatures can't stand up to the format's biggest beaters
My conclusions are only based off a card pool of about 40 1st edition holos so more data would be helpful to proving this
It provides a true zero-mana option for countering noncreature spells, only costs a single mana more than Negate itself when hardcast, and even exiles the target to boot
Shelob, Dread Weaver checks decks that like to sacrifice creatures and bring them back, but unlike other similar cards like Kalitas, Traitor of Ghet, Shelob has a mechanism to pass through the big Spider and deposit an exiled creature back in its controllers graveyard
Avacyn breaks games in seconds
As soon as you do, your opponents are effectively forced to block that creature every turn, and the deathtouch buff guarantees you destroy whatever you touch