Sanctum of the Sun is really — really — powerful
Azor’s Gateway Transforms into Sanctum of the Sun
Yes, it sucks that Azor’s Gateway exiles cards instead of simply discarding them to the graveyard, but (and you’ll probably figure this out in a couple of sentences) that would simply be too powerful once you’ve flipped the Legendary Artifact into Legendary Land.
Remember – zeroes are close to free, due to land cards.
Cut // Ribbons is Best Buddies with Sanctum of the Sun
Imagine you simply have the same life total as your opponent when Azor’s Gateway flips…
Aren’t they basically dead if you have Cut // Ribbons in your graveyard? If you have, say, twenty life (and the opponent has twenty life) you will go to twenty-five. You can immediately untap Azor’s Gateway and tap its opposite number for twenty-five black mana, even if there are no other sources of black in your deck. This nets out to twenty-three life from Ribbons! Boom!
The Cut side of Cut // Ribbons has long been a Role Player-level option. It looks like this card — which is highly serviceable as a fast reactive card — may jump colossally in value now that getting it into the graveyard basically kills the opponent.
Remember a moment ago when we were lamenting the exile v. discard limitation on Azor’s Gateway? Can you imagine how disastrous simple discarding would be given the incentive of getting Ribbons into your graveyard? This is already a great combination! They can’t make it too easy, can they?
Cut // Ribbons acts like a two but is technically a four; that makes it fast enough to defend you front-side, while essentially ensuring victory later. Best. Buddies.
What About Untapping Sanctum of the Sun?
In “Chasing Sanctum of the Sun” Patrick argues passionately for the power level of Zacama, Primal Calamity. This Elder Dinosaur might be the payoff that Ramp decks have been looking for since the rotation of the Eldrazi cards. While Zacama doesn’t have a built-in durability, it can destroy many different kinds of permanents, as well as generate a massive life buffer. The fact that Zacama has CMC 9 is awesome with Azor’s Gateway… I mean, how many nines do you think you can possibly play? It both drives diversity of casting cost for purposes of flipping and gives you an outlet to discard redundant uncastable giants.