Faith's Reward + Codex Shredder + Krark-Clan Ironworks

Faith's Reward
Codex Shredder
Krark-Clan Ironworks

Requires
Faith's Reward in hand. All permanents on the battlefield. Artifacts you control can tap to produce at least w. You control at least five artifacts.
Steps
  1. Activate mana-producing artifact by tapping it, adding w
  2. Activate Krark-Clan Ironworks by sacrificing all artifacts, adding at least 9
  3. Cast Faith's Reward by paying 3w, returning all permanents that were put into your graveyard this turn to the battlefield
  4. Activate Codex Shredder's second ability by paying 5, tapping, and sacrificing it, returning Faith's Reward to your hand
  5. Repeat
Results
Infinite colorless mana. Infinite storm count. Infinite magecraft triggers.