In response to my own spell (can I do that?) I tap the Sub Hanger for a counter, then I draw 2...I discard a mountain and a Lotus Petal and untap the Sub Hanger, Izzet Boilerworks, and Dimir Aqueduct, then I tap the Boilerworks and the Underground Sea to cast
Stitch in Time calling Heads...Responses?
Spiderman: 17
Hand: 7
Library: 28
In Play:
(U,U,U,U) Underground Sea x4 (B/U Dual)
(T)
Watery Grave (B/U Ravnica Dual)
(U) Underground River (B/U Pain)
(T,U) Swamp x2
(T) Island
(U)
Icy Manipulator (1, T: tap target creature, artifact, or land)
(S)
Szadek, Lord of Secrets (5/5, flying, lots of text about milling)
Graveyard: Polluted Delta, El-Hajjaj, Polluted Delta, Polluted Delta, Clone, Swamp
RFG: Circu, Dimir Lobotomist, Phage the Untouchable, Underworld Dreams, Spire Golem, Jester's Mask, Hypnox, Royal Assassin
TomB: 12
Hand: 4
Library: 36
In Play:
(U)
Faerie Conclave (Faerie Conclave comes into play tapped. Tap: Add U to your mana pool. 1U: Faerie Conclave becomes a 2/1 blue creature with flying until end of turn. It's still a land.)
(U) Mountain
(T) Swamp
(U)
Subterranean Hanger (Subterranean Hangar comes into play tapped. Tap: Put a storage counter on Subterranean Hangar. Tap: Remove any number of storage counters from Subterranean Hangar: Add B to your mana pool for each storage counter removed this way.)
5 counter(s)
(U)
Dimir Aqueduct (Dimir Aqueduct comes into play tapped. When Dimir Aqueduct comes into play, return a land you control to its owner's hand. Tap: BU)
(U)
Forbidden Orchard (Tap: Add one mana of any color to your mana pool. Whenever you tap Forbidden Orchard for mana, put a 1/1 colorless Spirit creature token into play under target opponent's control.)
(T)
Underground Sea (B/U Dual land)
(U)
Volcanic Island (U/R Dual land)
(T)
Izzet Boilerworks (Izzet Boilerworks comes into play tapped. When Izzet Boilerworks comes into play, return a land you control to its owner's hand. Tap: UR)
(T)
Sol Ring (Tap: Add 2 to your mana pool.)
(U)
Mana Vault (Mana Vault doesn't untap during your untap step. At the beginning of your upkeep, you may pay 4 Mana. If you do, untap Mana Vault. At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you. Tap: Add 3 Mana to your mana pool.)
Tainted Æther (Enchantment: Whenever a creature comes into play, its controller sacrifices a creature or land)
On Stack:
Stitch in Time (Flip a coin. If you win the flip, take an extra turn after this one.)
Graveyard: Lightning Bolt, Bloodstained Mire, Ertai's Meddling, Denying Wind, Searing Wind
RFG: