How can you create a combo with Goblin Welder, Ashaya, Soul of the Wild, Retreat to Coralhelm?
user
[START OF COMBO]This combo can be formed with Goblin Welder, Ashaya, Soul of the Wild, Retreat to Coralhelm

Color identity: GUR
Mana cost: 
Steps:
  1. Activate Goblin Welder by tapping it, sacrificing any artifact creature you control and returning any other artifact creature from your graveyard to the battlefield.
  2. The creature enters the battlefield as a Forest land, triggering Retreat to Coralhelm, untapping Goblin Welder.
  3. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite landfall triggers
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Goblin Welder does not have summoning sickness.
  - You control at least one nontoken artifact creature.
  - You have at least one artifact creature card in your graveyard.
[END OF COMBO PREREQUISITES]
assistant