How can you create a combo with Prowling Geistcatcher, Saffi Eriksdotter, Phyrexian Altar?
user
[START OF COMBO]This combo can be formed with Prowling Geistcatcher, Saffi Eriksdotter, Phyrexian Altar

Color identity: WBG
Mana cost: 
Steps:
  1. Activate Saffi by sacrificing it, targeting Prowling Geistcatcher.
  2. When Saffi dies, Prowling Geistcatcher's first ability triggers, exiling Saffi from your graveyard.
  3. Resolve the Saffi ability.
  4. Activate Phyrexian Altar by sacrificing Prowling Geistcatcher, adding one mana of any color.
  5. When Prowling Geistcatcher dies, its second ability and Saffi trigger.
  6. Resolve the Saffi trigger, returning Prowling Geistcatcher from your graveyard to the battlefield.
  7. Resolve the Prowling Geistcatcher trigger, returning Saffi from exile to the battlefield.
  8. Repeat.[END OF COMBO STEPS]

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

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
assistant