So turns out this deck doesn't work, due to a change in CR503.1 causing will to disappear on the first turn during what would have been the recovery phase. The basic idea of the deck still kinda works (but not on turn 1), so I'm keeping it around. Might look into upgrading it to account for the rule change at some point, but not immediately.
Going first: Have at least Advice, Sprinting Steward, and one Metal Lifeform in hand. One-Eyed Dragon optional. 1) In response to [Homeland] or to Deathmetal's enter ability, GA Mysterious Messenger to pull a Rare Metal into hand. If you already have two in hand, this step can be skipped. 2) Deathmetal produces a fire will and a water will by ditching two Metal Lifeforms. 3) Call a stone with a moonchild. 4) Dexia's Advice, putting a Magitrooper, Painter Gears, DAlice, and Fallen Witch into the field. 5) Witch train into Pumpkin Witch. 6) Play Sprinting Steward with [Mastery], paying 2400~3200 life. (depending on how many One Eyed Dragons in hand) Grants +6/6 ~ +8/8 and Swiftness to board
Current field, if 8/8 from Steward: 9/9 Magitrooper [Swft Fly] 8/9 Painter Gears [Swft Fly] 13/13 Dark Alice [Swft Fly] 12/12 Fallen Witch [Swft Fly] 12/12 Fallen Witch [Swft Fly] 12/12 Fallen Witch [Swft Fly] 12/12 Fallen Witch [Swft Fly] 11/16 Pumpkin Witch [Swft Fly]
Total ATK/DEF: 88/94 (if 6/6 from Sprinting Steward, then 72/78 instead. Without Steward, then only 25/31)
If two Rare Metals were removed for Deathmetal, Metal Shield Solid can grant all entities Eternal. One-Eyed Dragon can also do its burn or draw thing. If going second, other Cocoons and Viga cards are available.
Going first: Have at least Advice, Sprinting Steward, and one Metal Lifeform in hand. One-Eyed Dragon optional.
1) In response to [Homeland] or to Deathmetal's enter ability, GA Mysterious Messenger to pull a Rare Metal into hand. If you already have two in hand, this step can be skipped.
2) Deathmetal produces a fire will and a water will by ditching two Metal Lifeforms.
3) Call a stone with a moonchild.
4) Dexia's Advice, putting a Magitrooper, Painter Gears, DAlice, and Fallen Witch into the field.
5) Witch train into Pumpkin Witch.
6) Play Sprinting Steward with [Mastery], paying 2400~3200 life. (depending on how many One Eyed Dragons in hand) Grants +6/6 ~ +8/8 and Swiftness to board
Current field, if 8/8 from Steward:
9/9 Magitrooper [Swft Fly]
8/9 Painter Gears [Swft Fly]
13/13 Dark Alice [Swft Fly]
12/12 Fallen Witch [Swft Fly]
12/12 Fallen Witch [Swft Fly]
12/12 Fallen Witch [Swft Fly]
12/12 Fallen Witch [Swft Fly]
11/16 Pumpkin Witch [Swft Fly]
Total ATK/DEF: 88/94 (if 6/6 from Sprinting Steward, then 72/78 instead. Without Steward, then only 25/31)
If two Rare Metals were removed for Deathmetal, Metal Shield Solid can grant all entities Eternal. One-Eyed Dragon can also do its burn or draw thing. If going second, other Cocoons and Viga cards are available.