How can you create a combo with Denry Klin, Editor in Chief, River Kelpie, Ashnod's Altar?
user
[START OF COMBO]This combo can be formed with Denry Klin, Editor in Chief, River Kelpie, Ashnod's Altar

Color identity: WU
Mana cost: 
Steps:
  1. Activate Ashnod's Altar by sacrificing River Kelpie, adding {C}{C}.
  2. River Kelpie dies, triggering its persist ability, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  3. River Kelpie enters the battlefield, triggering itself and Denry Klin.
  4. Resolve the River Kelpie trigger, causing you to draw a card.
  5. Resolve the Denry Klin trigger, putting a +1/+1 counter on River Kelpie.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite card draw
  - Infinite draw triggers
  - Near-infinite colorless mana
  - Near-infinite death triggers
  - Near-infinite enters the battlefield
  - Near-infinite leaves the battlefield
  - Near-infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Denry Klin has at least one +1/+1 counter on it.
  - River Kelpie does not have a -1/-1 counter on it.
[END OF COMBO PREREQUISITES]
assistant