This deck is not for the faint of heart.
Pyromancer Ascension
is my favorite card of all time, and it was the core of my favorite Standard deck ever. Thanks to Modern, I can play it again!
Combos:
Pyromancer Ascension
+ 2x
Noxious Revival
+ 2x Manamorphose + 2x Thought Scour = infinite mana, then use it to repeatedly mill your opponent.
While it involves 6 cards and an active Ascension, you really only need a
Noxious Revival
and a Manamorphose in hand to do it (the rest need to be in the graveyard, easy with Thought Scour and Faithless Looting). Best part? They're all instants, so you can do it during your opponent's upkeep.
How: Cast
Noxious Revival
and copy it, target
Noxious Revival
and Manamorphose. Cast Manamorphose and copy it, generating RUGG and drawing the
Noxious Revival
and Manamorphose. Cast
Noxious Revival
(using G) and copy it, target the
Noxious Revival
and Manamorphose we've already played. Cast Manamorphose (using UR) and copy it, generating RUGG and drawing the
Noxious Revival
and Manamorphose again. Rinse and repeat. Note that we generate an extra 1 green mana every time. Do this 100 times, then repeat it another 100 times, but generating an extra 1 blue mana every time. Then, switch Manamorphose with Thought Scour (always target your opponent), use all the mana you generated to cast them both, and mill them out.
2x
Pyromancer Ascension
+ Remand + Manamorphose = repeatedly draw 4 cards.
After you've drawn a few Lightning Bolts and Lightning Helixs, just cast Manamorphose to generate the needed mana to cast them all and win. Also, all cards involved are instants, so you can do this in response to them attempting to kill you (a la Solidarity).
How: Cast Manamorphose and copy it twice, then respond with Remand (targeting Manamorphose) and copy it twice. The first copy of Remand will target Manamorphose, while the second copy of Remand will target the original Remand. The second copy resolves, countering the original Remand (returning it to your hand) and drawing you a card. The first copy of Remand resolves and counters Manamorphose (returning it to your hand) and draws you a card. Then the second copy of Manamorphose resolves, generating UR and drawing you a card. Then the first copy of Manamorphose resolves, generating UR and drawing you another card. End result: Remand and Manamorphose are in your hand, you have UURR in your pool to recast them, and you gained 4 cards.