It could be to pay for a different cards cost like Abandon Hope , because a spell requires you to, or to reduce your hand back to its maximum hand size
It's crew cost is only 2, so there's potential for some crazy plays
#9: Ojer Taq, Deepest Foundation Ojer Taqs only flaw is that its prohibitive cost makes it something of a win-more card
While enchantments are nearly as likely to be put into the graveyard as creatures or artifacts, there are plenty of good enchantments that sacrifice for good effect Aura of Silence, Pursuit of Knowledge, Seal of Cleansing, Soul Snare and thats just in white
These cards are not legal in Standard or Explorer, but will be legal in Alchemy, Historic, and Historic Brawl