How can you create a combo with Magosi, the Waterveil, Nesting Grounds, Karn's Bastion?
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[START OF COMBO]This combo can be formed with Magosi, the Waterveil, Nesting Grounds, Karn's Bastion

Color identity: U
Mana cost: {5} each turn
Steps:
  1. Activate Karn's Bastion's last ability by paying {4} and tapping it, putting an eon counter on Magosi.
  2. Activate Nesting Grounds's last ability by paying {1} and tapping it, moving an eon counter from Magosi to Nesting Grounds.
  3. Activate Magosi's last ability by tapping it, removing an eon counter from it, and returning it to your hand, taking an extra turn after this one.
  4. Play Magosi from your hand.
  5. Move to your next turn.
  6. Activate Karn's Bastion's last ability by paying {4} and tapping it, putting an eon counter on Nesting Grounds.
  7. Activate Nesting Grounds's last ability by paying {1} and tapping it, moving an eon counter from Nesting Grounds to Magosi.
  8. Repeat from step 3.[END OF COMBO STEPS]

Result:
  - Infinite turns[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Magosi has at least one eon counter on it.
[END OF COMBO PREREQUISITES]
assistant