Doomsday Piles

[GiantGrowth]

I'd like to try to make a list of all the available doomsday piles in order to examine the possibility of a playable doomsday combo deck. I'm tired of looking at that card and saying to myself "I wonder if that will ever work." I say we find out, here and now. I know it's been done before, but I want to prove beyond the shadow of a doubt that doomsday is/is not a playable deck idea.

post what you have with an explanation if necessary, whether you need certain cards in hand, and how much mana you need besides the cost of doomsday.

Ill post what we have so far here:

2U for predict and bauble
Predict
Grapeshot
LED
Bauble
Second Sunrise

5 without having any of the permanents before doomsday
*Any two cards that let you draw three cards (blank+Ideas Unbound, Street Wraith + Perilous Research, etc...)*
Helm of Awakening
Sensei's Divining Top
Sensei's Divining Top
Brain Freeze or Grapeshot

Cost/Requirements: 1BB + U/BBB Draw Spell that draws at least 3 (Brainstorm or a Draw4)
Effect: 8 Storm + Tendrils with just the stack (so excluding the draw spell, doomsday, accel, etc)
Stack:
LED
LED
Infernal Tutor
DW
IGG

Cost/Requirement: 4B + U Brainstorm and Sensei's Top
Effect: Double Tendrils for at least 22 lifeloss
Stack:
Infernal Tutor
LED
LED
Tendrils
Tendrils

Cost/Requirement: 2BBB + U Brainstorm + 2 cards in hand (this is technically a requirement for the draw4 to not kill you; I thought this was obvious)
Effect: Double Tendrils for 22 lifeloss
Stack:
Draw4
LED
LED
Tendrils
Tendrils

2UB Requires a turn, and the opponent to not have instant speed removal. Could just as easily be the same turn if breakthrough (or street wraith) is in your hand when you cast the doomsday
Breakthrough
Shallow Grave
Krosan Cloudscraper
Krosan Cloudscraper
Sutured Ghoul

BBB requires SDT in play and cruel bargain in hand.
LED
LED
LED
IGG
Tendrils

Shelldock Isle
Darksteel Colossus
Careful Study
Elvish Spirit Guide
Berserk

Shelldock Isle
Searing Wind
Twincast
Prodigal Sorcerer
Obstinate Familiar

Shelldock Isle
Auriok Salvagers
Careful Study
Lion's Eye Diamond
Pyrite Spellbomb