Of course, there are times in a game when you wont be able to activate its draw ability
This is a tempo deck that can put a lot of questing pressure on the board early
Its one of few pieces of fast mana that taps for multiple mana without restrictionno need to untap it like Mana Vault, no damage like Mana Crypt
Exchange that card with the top card of your library., so you basically just end up losing the game and probably a Swamp, but if you are able to cast a Darkpact you get to essentially trade your opponent a Swamp for whatever they anted - pretty dirty and cheesy, especially if they flip over a spicy rare
It can be discarded to return lands from your graveyard to the battlefield and then be reanimated for cheap to start putting pressure to your opponents that have to go down in card advantage to deal with this overpowered insect
Soon, your Orcs will be enormous, something on your board will be very hard to block, and you'll be drawing several cards a turn