Delver of Secrets and Runechanter's Pike were the terror of the pre-rotation format for a time, but both of them have dropped off the map with the rotation of Scars of Mirrodin block. Combined with a few other tools, however, I think Runechanter's Pike in particular is ready for a comeback. Here's the deck I put together for it:
Invisible Stalker and Runechanter's Pike combine to provide an extremely fast and fairly difficult-to-deal-with clock. With these two cards, you can easily be swinging for 5 unblockable damage as early as turn four. If you have the mana, you can even equip the Pike to a Stalker to attack for a bunch of damage and then equip it to another creature to leave a deadly blocker ready to defend you. Rancor can also pump up the Stalker if you need to finish off your opponent more quickly. Although trample won't matter on an unblockable creature, the extra 2 damage pet turn is often worth it.
Augur of Bolas gives you a decent blocker to defend yourself with, and it lets you grab an instant or sorcery from the top of your deck as well. Since the deck is just over one-third instants and sorceries, you should be able to find one in the top three most of the time.
Runechanter's Pike can help your creatures deal massive amounts of damage as long as you've been able to put a few instants and sorceries in the bin. Although creatures other than Invisible Stalker will still be vulnerable to chump-blocking, putting a Rancor on one will get rid of that problem straight away.
Rancor gives trample to giant Quirion Dryads and Augurs with Pikes, and it can also be used to make an Invisible Stalker even more threatening in a pinch. As an extra bonus, if that creature is killed by a removal spell or board wipe, Rancor will go right back to your hand, ready to make your next threat bigger and badder.
Unsummon and Cyclonic Rift often function as a Time Walk against creature decks, forcing your opponent to spend his next turn casting that Loxodon Smiter again or making him waste an attack with Sublime Archangel. Like Inaction Injunction, these are temporary answers, but if you can put a fast enough clock on the board, these solutions suddenly don't seem so temporary anymore.
Syncopate is often some combination of an expensive Force Spike and a bad Mana Leak, but that's often good enough. With so many decks tapping out turn after turn to curve out with threats such as Silverblade Paladin and Sublime Archangel, you can frequently deal with problem spells for just 2 mana.
Although not as effective as Thought Scour, Fleeting Distraction is another 1-mana cantrip to help you dig through your deck while making your creatures bigger. Although its effect is undoubtedly marginal, it will usually at least gain you 1 life, and sometimes much more than that. When a Silverblade Paladin comes charging in for 4 damage, a Fleeting Distraction will not only cut that in half, but it will allow you to throw an Augur of Bolas in front of it without having to sacrifice your blocker. Although this situation may not come up terribly often, gaining 2 to 4 life and drawing a card is a fairly powerful effect for 1 mana. Back in the day, cycling Renewed Faith was often good enough for Standard, and this will frequently be much better than that.
Azorius Aggro – Game 1
My opponent played Glacial Fortress and cast Precinct Captain, putting a counter on the Champion. He attacked for 2 and ended his turn. I drew Fleeting Distraction, played an Island, and cast a Quirion Dryad. I ended my turn.
My opponent paid 2 life to play a Hallowed Fountain untapped and cast Silverblade Paladin, pairing it with the Precinct Captain and putting another counter on Champion of the Parish. He attacked with both creatures, and I took 7. Precinct Captain made two Soldier tokens, and he ended his turn. I drew Syncopate, played an Island, and passed the turn.
My opponent cast Sublime Archangel, paired it with Silverblade Paladin, and attacked with the Paladin for 14. I Unsummoned it, and he passed the turn. I drew Syncopate and cast Thought Scour, drawing a Cyclonic Rift. I passed the turn.
I drew Rancor, played my Forest, and cast Quirion Dryad. I passed the turn. My opponent played a Plains and cast Champion of the Parish, then attacked for 2 with his Falcon. I took the damage, and he ended his turn.
I drew Unsummon and cast Augur of Bolas, putting a counter on the Dryad. I grabbed a Cyclonic Rift off the top and attacked for 2 with my Dryad before passing the turn. My opponent cast Precinct Captain, putting a counter on Champion of the Parish. He attacked for 2 with War Falcon and passed the turn.
I drew Unsummon, put another Rancor on the Dryad, and attacked for 7. My opponent blocked with both Precinct Captains, and I cast Unsummon on one, pumping the Dryad up to an 8/4 and dropping my opponent to 8 after killing the remaining Captain. I passed the turn. My opponent recast Precinct Captain and passed the turn. I drew Inaction Injunction, detained the Captain, and attacked for lethal damage.
My opponent played a Plains and cast Silverblade Paladin, pairing it with the Falcon. He attacked me for 4 and passed the turn. I drew Thought Scour, played a Forest, and cast Runechanter's Pike. I attacked for 1 with Invisible Stalker and passed the turn.
My opponent put a Hallowed Fountain into play tapped and cast two War Falcons, pairing one with Silverblade Paladin, and he attacked for 8 with his Angel. I bounced it with Cyclonic Rift, and he passed the turn. I drew an Island, played it, and equipped Runechanter's Pike to Invisible Stalker. I cast Thought Scour, milling two more Thought Scours and drawing an Evolving Wilds. I dropped my opponent to 12 with Invisible Stalker and passed the turn.
My opponent played a Plains and cast Sublime Archangel. He attacked for 12 with the paired War Falcon, and I dropped to 4. He ended his turn, and I cast my other Thought Scour, milling an Unsummon and an Inaction Injunction and drawing another Invisible Stalker. On my turn, I drew an Island, played it, then cast and equipped my Runechanter's Pike. I attacked with a 17/1 Invisible Stalker, and that was the end of it.
This deck seems to work much betting when you draw multiple bounce spells, and as such, I would consider putting the full set of Cyclonic Rift in the main deck, possibly over a Syncopate and a Fleeting Distraction. I was very happy with Invisible Stalker's ability to race when equipped with a Runechanter's Pike, and although it took longer to get going than I would have liked, Quirion Dryad was fairly effective, especially with a Rancor or two. If you miss killing your opponents with giant Runechanter's Pikes or if you just want to infuriate your opponent with an endless stream of Unsummons, be sure to give this deck a try.