How can you create a combo with Grimgrin, Corpse-Born, Elemental Mastery?
user
[START OF COMBO]This combo can be formed with Grimgrin, Corpse-Born, Elemental Mastery

Color identity: UBR
Mana cost: 
Steps:
  1. Activate Grimgrin by tapping it, creating a number of Elemental tokens with haste equal to Grimgrin's power.
  2. Activate Grimgrin by sacrificing an Elemental token to untap Grimgrin and to put a +1/+1 counter on Grimgrin.
  3. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite +1/+1 counters on Grimgrin
  - Infinite creature tokens with haste
  - Infinite enters the battlefield
  - Infinite tap triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Elemental Mastery attached to Grimgrin.
  - Grimgrin is untapped and does not have summoning sickness.
[END OF COMBO PREREQUISITES]
assistant