Aetherflux Reservoir + Cloudstone Curio + Defiler of Dreams

U identity

Commander legal

The 3 combo pieces

What must be in place

Your life total is at least 5.
You have a blue nonartifact permanent card in hand with mana cost {U}.
You control a nontoken nonartifact blue permanent with mana cost {U} that shares a card type with the card in hand.

How to execute it

  1. Cast the blue permanent card in your hand by paying 2 life.
  2. Defiler of Dreams and Aetherflux Reservoir triggers.
  3. Resolve the Defiler of Dreams trigger, causing you to draw a card.
  4. Resolve the Aetherflux Reservoir trigger, causing you to gain 1 life for each spell you've cast before it this turn.
  5. The blue permanent enters the battlefield, triggering Cloudstone Curio, returning another nontoken nonartifact blue permanent with mana cost {U} from the battlefield to your hand.
  6. Repeat until you have an empty library.
  7. Activate Aetherflux Reservoir by paying fifty life, dealing fifty damage to any target.
  8. Repeat step 7 as many times as desired.

What the combo produces